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Gymnotiformes

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because they indicate a higher fitness of the male. Since these low-frequency signals are more conspicuous to predators, the emitting of such signals by males shows that they are capable of evading predation. Therefore, the production of low-frequency signals is under competing evolutionary forces: it is selected against due to the eavesdropping of electric predators, but is favored by sexual selection due to its attractiveness to females. Females also prefer males with longer pulses, also energetically expensive, and large tail lengths. These signs indicate some ability to exploit resources, thus indicating better lifetime reproductive success.
918: 768: 874: 403:. A forward traveling wave can be associated with forward motion, while a wave in the reverse direction produces thrust in the opposite direction. This undulating motion of the fin produced a system of linked vortex tubes that were produced along the bottom edge of the fin. A jet was produced at an angle to the fin that was directly related to the vortex tubes, and this jet provides propulsion that moves the fish forward. The wave motion of the fin is similar to that of other marine creatures, such as the undulation of the body of an 720: 128: 965: 794: 1120:(family: Gymnotidae) have evolved a unique waveform that allows the individual fish to identify between species, genders, individuals and even between mates with better fitness levels. The differences include the direction of the initial phase of the wave (positive or negative, which correlates to the direction of the current through the electrocytes in the electric organ), the amplitude of the wave, the frequency of the wave, and the number of phases of the wave. 913: 864: 836: 789: 763: 715: 666: 628: 102: 869: 671: 634: 841: 487:, far too weak to cause any harm to other fish. Instead, they are used to help navigate the environment, including locating the bottom-dwelling invertebrates that compose their diets. They may also be used to send signals between fish of the same species. In addition to this low-level field, the electric eel also has the capability to 1104:
Approximately 150 Mya, the ancestor to modern-day Gymnotiformes and Siluriformes were estimated to have convergently evolved ampullary receptors, allowing for passive electroreceptive capabilities. As this characteristic occurred after the prior loss of electroreception among the subclass Neopterygii
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Albert, J. S. and W. G. R. Crampton. 2005. Diversity and phylogeny of Neotropical electric fishes (Gymnotiformes). Pp. 360-409 in Electroreception. T. H. Bullock, C. D. Hopkins, A. N. Popper, and R. R. Fay (eds.). Springer Handbook of Auditory Research, Volume 21 (R. R. Fay and A. N. Popper, eds).
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Studies have shown that the natural angle between the body of the knifefish and its fin is essential for efficient forward motion, for if the anal fin was located directly underneath, then an upwards force would be generated with forward thrust, which would require an additional downwards force in
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Sexual selection is another driving force with an unusual influence, in that females exhibit preference for males with low-frequency signals (which are more easily detected by predators), but most males exhibit this frequency only intermittently. Females prefer males with low-frequency signals
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that allow them to produce electric fields, which are usually weak. In most gymnotiforms, the electric organs are derived from muscle cells. However, adult apteronotids are one exception, as theirs are derived from nerve cells (spinal electromotor neurons). In gymnotiforms, the electric organ
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Arcila, Dahiana; Ortí, Guillermo; Vari, Richard; Armbruster, Jonathan W.; Stiassny, Melanie L. J.; Ko, Kyung D.; Sabaj, Mark H.; Lundberg, John; Revell, Liam J.; Betancur-R, Ricardo (13 January 2017). "Genome-wide interrogation advances resolution of recalcitrant groups in the tree of life".
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discharge may be continuous or pulsed. If continuous, it is generated day and night throughout the entire life of the individual. Certain aspects of the electric signal are unique to each species, especially a combination of the pulse waveform, duration, amplitude, phase and frequency.
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Genetic drift is also a factor contributing to the diversity of electric signals observed in Gymnotiformes. Reduced gene flow due to geographical barriers has led to vast differences signal morphology in different streams and drainages.
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Crampton, W.G.R. and J.S. Albert. 2006. Evolution of electric signal diversity in gymnotiform fishes. Pp. 641-725 in Communication in Fishes. F. Ladich, S.P. Collin, P. Moller & B.G Kapoor (eds.). Science Publishers Inc., Enfield,
396:. These fin rays are curved into the direction of motion, indicating that the knifefish has active control of the fin ray curvature, and that this curvature is not the result of passive bending due to fluid loading. 384:
that stretch along almost the entire underside of their bodies. The fish swim by rippling this fin, keeping their bodies rigid. This means of propulsion allows them to move backwards as easily as they move forward.
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Arnegard, Matthew E.; McIntyre, Peter B.; Harmon, Luke J.; Zelditch, Miriam L.; Crampton, William G. R.; Davis, Justin K.; Sullivan, John P.; Lavoué, Sébastien; Hopkins, Carl D. (1 September 2010).
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control. By rolling they can generate a vertical thrust to quickly, and efficiently, ambush their prey. The forward movement is determined exclusively by the ribbon fins and the contribution of the
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after having been present in the common ancestor of vertebrates, the ampullary receptors of Gymnotiformes are not homologous with those of other jawed non-teleost species, such as chondricthyans.
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One significant force driving this evolution is predation. The most common predators of Gymnotiformes include the closely related Siluriformes (catfish), as well as predation within families (
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Arnegard, Matthew E.; Bogdanowicz, Steven M.; Hopkins, Carl D. (February 2005). "Multiple cases of striking genetic similarity between alternate electric fish signal morphs in sympatry".
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Albert, J. S., and W. G. R. Crampton. 2005. Electroreception and electrogenesis. Pp. 431-472 in The Physiology of Fishes, 3rd Edition. D. H. Evans and J. B. Claiborne (eds.). CRC Press.
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Albert, James S.; Fink, William L. (12 March 2007). "Phylogenetic relationships of fossil neotropical electric fishes (Osteichthyes: Gymnotiformes) from the upper Miocene of Bolivia".
423:. The speed at which the fish moved through the water had no correlation to the amplitude of its undulations, however it was directly related to the frequency of the waves generated. 1112:. As Arnegard et al. (2005) and Albert and Crampton (2005) show, their last common ancestor was roughly 140 to 208 Mya, and at this time they did not possess ESSs. Each species of 388:
The knifefish has approximately one hundred and fifty fin rays along its ribbon-fin. These individual fin rays can be curved nearly twice the maximum recorded curvature for
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Shirgaonkar, Anup A.; Curet, Oscar M.; Patankar, Neelesh A.; MacIver, Malcolm A. (1 November 2008). "The hydrodynamics of ribbon-fin propulsion during impulsive motion".
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Youngerman, Eric D.; Flammang, Brooke E.; Lauder, George V. (October 2014). "Locomotion of free-swimming ghost knifefish: anal fin kinematics during four behaviors".
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Albert, J. S., and W. G. R. Crampton. 2006. Electroreception and electrogenesis. Pp. 429-470 in P. L. Lutz, ed. The Physiology of Fishes. CRC Press, Boca Raton, FL.
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Picq, Sophie; Alda, Fernando; Bermingham, Eldredge; Krahe, Rüdiger (September 2016). "Drift-driven evolution of electric signals in a Neotropical knifefish".
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Different wave patterns produced along the length of the elongated anal fin allow for various forms of thrust. The wave motion of the fin resembles traveling
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The caudal fin is absent, or in the apteronotids, greatly reduced. The gill opening is restricted. The anal opening is under the head or the pectoral fins.
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Xiong, Grace; Lauder, George V. (August 2014). "Center of mass motion in swimming fish: effects of speed and locomotor mode during undulatory propulsion".
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Lavoué, Sébastien; Miya, Masaki; Arnegard, Matthew E.; Sullivan, John P.; Hopkins, Carl D.; Nishida, Mutsumi (14 May 2012). Murphy, William J. (ed.).
3500: 3795: 3669: 3460: 3445: 3465: 3695: 1093:. This may be because they did not spread into Africa before South America and Africa split, or it may be that they were out-competed by 3643: 2912: 372:), Gymnotiformes are slender fish with narrow bodies and tapering tails, hence the common name of "knifefishes". They have neither 1494:
Salazar, R.; Fuentes, V.; Abdelkefi, A. (January 2018). "Classification of biological and bioinspired aquatic systems: A review".
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period (about 120 million years ago). The families have traditionally been classified over suborders and superfamilies as below.
1623:"The phylogenetic distribution of electroreception: Evidence for convergent evolution of a primitive vertebrate sense modality" 1131:). These predators sense electric fields, but only at low frequencies, thus certain species of Gymnotiformes, such as those in 3687: 2704: 2426: 2070:
Lavoué, Sébastien; Miya, Masaki; Arnegard, Matthew E.; Sullivan, John P.; Hopkins, Carl D.; Nishida, Mutsumi (14 May 2012).
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Jagnandan, Kevin; Sanford, Christopher P. (December 2013). "Kinematics of ribbon-fin locomotion in the bowfin, Amia calva".
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There are currently about 250 valid gymnotiform species in 34 genera and five families, with many additional species
2072:"Comparable Ages for the Independent Origins of Electrogenesis in African and South American Weakly Electric Fishes" 2013:"Comparable Ages for the Independent Origins of Electrogenesis in African and South American Weakly Electric Fishes" 3757: 1905:"Unexpected species diversity in electric eels with a description of the strongest living bioelectricity generator" 3800: 3700: 1399:
Neveln, I. D.; Bai, Y.; Snyder, J. B.; Solberg, J. R.; Curet, O. M.; Lynch, K. M.; MacIver, M. A. (1 July 2013).
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Baker, Clare V. H.; Modrell, Melinda S.; Gillis, J. Andrew (2013-07-01). Krahe, Rüdiger; Fortune, Eric (eds.).
431:. A combination of forward and reverse wave patterns, which meet towards the center of the anal fin, produce a 503:. The actual number of species in the wild is unknown. Gymnotiformes is thought to be the sister group to the 454:
for forward movement was negligible. The body is kept relatively rigid and there is very little motion of the
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Fink, Sara V.; Fink, William L. (August 1981). "Interrelationships of the ostariophysan fishes (Teleostei)".
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Stoddard, Philip K. (July 1999). "Predation enhances complexity in the evolution of electric fish signals".
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Neveln, I. D.; Bale, R.; Bhalla, A. P. S.; Curet, O. M.; Patankar, N. A.; MacIver, M. A. (15 January 2014).
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Gymnotiformes and Mormyridae have developed their electric organs and electrosensory systems (ESSs) through
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of the fin to achieve various directional changes. The pectoral fins of these fishes can help to control
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de Santana, C. David; Crampton, William G. R.; Dillman, Casey B.; et al. (10 September 2019).
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Stoddard, Philip K. (1 September 2002). "The evolutionary origins of electric signal complexity".
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Hopkins, Carl D (1 December 1995). "Convergent designs for electrogenesis and electroreception".
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Species diversity and phylogenetic systematics of American knifefishes (Gymnotiformes, Teleostei)
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in 2019. This shows that contrary to earlier ideas, the Apteronotidae and Sternopygidae are not
3785: 3726: 3544: 2717: 2427:"Sexual Signal Evolution Outpaces Ecological Divergence during Electric Fish Species Radiation" 3721: 2783: 1909: 332: 114: 109: 3749: 3713: 3674: 3630: 3591: 2890: 2527: 2283: 2177: 2083: 2024: 1918: 1836: 1741:
Eschmeyer, W. N., & Fong, J. D. (2016). Catalog of fishes: Species by family/subfamily.
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Elbassiouny, Ahmed A.; Schott, Ryan K.; Waddell, Joseph C.; et al. (1 January 2016).
8: 3183: 2617:"Predation and Crypsis in the Evolution of Electric Signaling in Weakly Electric Fishes" 2531: 2287: 2181: 2087: 2028: 1964:"Mitochondrial genomes of the South American electric knifefishes (Order Gymnotiformes)" 1922: 1840: 1756:"Checklist of Gymnotiformes (Osteichthyes: Ostariophysi) and catalogue of primary types" 1542: 1507: 1464: 1269: 3400: 3325: 3279: 3130: 2684: 2638: 2594: 2551: 2480: 2454: 2404: 2392: 2352: 2309: 2247: 2203: 2146: 2106: 2071: 2047: 2012: 1988: 1963: 1939: 1904: 1860: 1811: 1707: 1682: 1663: 1430: 1376: 1327: 122: 3596: 2582: 3708: 3617: 3495: 3102: 3094: 2676: 2642: 2586: 2555: 2543: 2500: 2446: 2396: 2344: 2340: 2301: 2252: 2195: 2111: 2052: 1993: 1944: 1883: 1852: 1712: 1655: 1641: 1587: 1554: 1476: 1422: 1368: 1319: 1281: 1236: 1208: 1031: 622: 611: 500: 2458: 2408: 2356: 2313: 2207: 2150: 1864: 1667: 1434: 1331: 1135:, have shifted the frequency of their signals so they can be effectively invisible. 3622: 3505: 3480: 3365: 3330: 3135: 3079: 3035: 3006: 2879: 2852: 2840: 2688: 2668: 2628: 2598: 2578: 2535: 2492: 2438: 2388: 2336: 2291: 2242: 2234: 2185: 2138: 2101: 2091: 2042: 2032: 1983: 1975: 1934: 1926: 1844: 1807: 1767: 1702: 1694: 1645: 1637: 1577: 1546: 1515: 1511: 1468: 1412: 1380: 1358: 1311: 1273: 783: 553: 428: 348: 237: 1979: 3515: 3455: 3415: 3355: 3312: 3191: 2846: 2096: 2037: 1098: 719: 599: 439: 408: 393: 340: 204: 483:
The electric organs of most Gymnotiformes produce tiny discharges of just a few
3395: 3370: 3340: 3287: 3259: 3249: 3240: 3173: 3165: 3107: 2922: 1930: 1772: 1755: 1472: 1277: 607: 455: 389: 308: 169: 3779: 3567: 3420: 3410: 3380: 3360: 3335: 3145: 3140: 2953: 2740: 1591: 1179: 1152: 1061: 964: 907: 709: 631:. Fish able to deliver electric shocks are marked with a red lightning flash 582: 575: 488: 210: 59: 2633: 2616: 2496: 1848: 101: 3485: 3440: 3425: 3405: 3390: 3320: 3264: 3254: 3229: 3224: 3125: 2959: 2874: 2818: 2806: 2788: 2680: 2590: 2547: 2504: 2450: 2400: 2305: 2256: 2223:"The evolution and development of vertebrate lateral line electroreceptors" 2199: 2115: 2056: 1997: 1948: 1856: 1716: 1698: 1558: 1480: 1426: 1372: 1323: 1285: 1067: 1027: 857: 793: 657: 615: 504: 447: 443: 432: 320: 196: 2348: 1683:"Electrical signalling of dominance in a wild population of electric fish" 1659: 1531:
Journal of Experimental Zoology Part A: Ecological Genetics and Physiology
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Ferraris Jr, Carl J.; de Santana, Carlos David; Vari, Richard P. (2017).
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The ghost knifefish can vary the undulation of the waves, as well as the
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Fugère, Vincent; Ortega, Hernán; Krahe, Rüdiger (23 April 2011).
1083: 1075: 1071: 955: 637:. There are other electric fishes in other families (not shown). 285: 89: 64: 2709: 2615:
Stoddard, Philip K.; Tran, Alex; Krahe, Rüdiger (10 July 2019).
2272:"Electroreception, electrogenesis and electric signal evolution" 2166:"Electroreception, electrogenesis and electric signal evolution" 2122: 1878:
Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016).
1401:"Biomimetic and bio-inspired robotics in electric fish research" 1231:
Ferraris, Carl J. (1998). Paxton, J.R.; Eschmeyer, W.N. (eds.).
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motion during locomotion compared to the body size of the fish.
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Field Guide to the Fishes of the Amazon, Orinoco, and Guianas
1003: 959: 416: 415:. This type of vortex is also produced by some fish, such as 307:(the only exceptions are species that occasionally may visit 2920: 606:, are strongly electric, and are not closely related to the 267: 2378: 2069: 2010: 1780: 1723: 255: 240: 3084: 2004: 1753: 1070:, a lineage of primary freshwater fishes. The only known 1026:
fishes. The families Gymnotidae and Hypopomidae are most
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Most gymnotiforms are weakly electric, capable of active
404: 327:), attack and defense. A few species are familiar to the 319:, for navigation, communication, and, in the case of the 261: 243: 227:
Despite the name, the Electric Eel is a type of knifefish
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10.1671/0272-4634(2007)27[17:PROFNE]2.0.CO;2
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but not of delivering shocks. The electric eels, genus
1398: 464: 2474: 2472: 2470: 2468: 1344: 1034:) in small non-floodplain streams and rivers, and in 276: 264: 252: 2415: 1066:
Gymnotiformes are among the more derived members of
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produced by the knifefish was found to be a reverse
258: 270: 249: 246: 2465: 2220: 1877: 435:force allowing for hovering, or upwards movement. 2614: 1680: 3777: 2063: 1528: 1207:. Princeton University Press. pp. 322–345. 621:Actively electrolocating fish are marked on the 1896: 1235:. San Diego: Academic Press. pp. 111–112. 1203:van der Sleen, P.; Albert, J. S., eds. (2017). 2906: 2725: 1749: 1747: 2481:"Design features for electric communication" 1621:; Bodznick, D. A.; Northcutt, R. G. (1983). 1450: 997: 2913: 2899: 2732: 2718: 2128: 1744: 1674: 1097:, which are similar in that they also use 100: 2632: 2295: 2246: 2189: 2105: 2095: 2046: 2036: 1987: 1938: 1800:Zoological Journal of the Linnean Society 1771: 1706: 1649: 1581: 1416: 1362: 363: 2568: 2517: 2269: 2163: 1797: 1230: 1196: 317:producing electric fields to detect prey 222: 2478: 2326: 1178: 1172: 1089:Gymnotiformes has no extant species in 3796:Extant Late Jurassic first appearances 3778: 1871: 1571: 1565: 1162:, the African knife-fish (Mormyroidea) 1002:Gymnotiform fishes inhabit freshwater 533:(banded knifefishes and electric eels) 3543: 3542: 2894: 2713: 2654: 2652: 2610: 2608: 1882:(5 ed.). John Wiley & Sons. 1226: 1224: 489:produce much more powerful discharges 3740:AB0787CD-0A4E-FF90-FDAB-FE63E603217F 1446: 1444: 1394: 1392: 1390: 1297: 1295: 625:with a small yellow lightning flash 419:, through the oscillations of their 2755:Electroreception and electrogenesis 1127:is one of the largest predators of 1030:(numbers of species) and abundant ( 471:Electroreception and electrogenesis 465:Electroreception and electrogenesis 380:, but do possess greatly elongated 13: 2649: 2621:Frontiers in Ecology and Evolution 2605: 2393:10.1111/j.0014-3820.2005.tb00993.x 2131:Journal of Vertebrate Paleontology 1812:10.1111/j.1096-3642.1981.tb01575.x 1221: 14: 3812: 2739: 2698: 1441: 1387: 1292: 2270:Crampton, William G. R. (2019). 2164:Crampton, William G. R. (2019). 963: 916: 911: 872: 867: 862: 839: 834: 792: 787: 766: 761: 718: 713: 675: 669: 664: 632: 626: 578:(glass and rat-tail knifefishes) 507:from which they diverged in the 236: 126: 32: 2562: 2511: 2485:Journal of Experimental Biology 2372: 2363: 2329:Current Opinion in Neurobiology 2320: 2263: 2227:Journal of Experimental Biology 2214: 2157: 1818: 1790: 1522: 1405:Journal of Experimental Biology 1351:Journal of Experimental Biology 1304:Journal of Experimental Biology 2705:Photos of various gymnotiforms 2479:Hopkins, C. D. (15 May 1999). 1829:Nature Ecology & Evolution 1516:10.1016/j.oceaneng.2017.11.012 1487: 1338: 1249: 358: 303:. Found almost exclusively in 1: 2583:10.1016/S0928-4257(03)00004-4 1980:10.1080/23802359.2016.1174090 1166: 368:Aside from the electric eel ( 2341:10.1016/0959-4388(95)80105-7 2097:10.1371/journal.pone.0036287 2038:10.1371/journal.pone.0036287 1642:10.1016/0165-0173(83)90003-6 1055: 593: 501:yet to be formally described 7: 2571:Journal of Physiology-Paris 1146: 1078:about 7 million years ago ( 494: 10: 3817: 2815:(S. American knifefishes) 2760:Jamming avoidance response 1931:10.1038/s41467-019-11690-z 1773:10.1590/1982-0224-20160067 1473:10.1016/j.zool.2014.03.002 1278:10.1016/j.zool.2014.04.004 1059: 468: 3551: 3311: 3278: 3238: 3215: 3182: 3164: 3116: 3093: 3060: 3049: 3026: 3015: 2997: 2986: 2968: 2930: 2870:History of bioelectricity 2862: 2799: 2768: 2747: 1824:"Arcila et al., 2017"> 1796:"Fink and Fink, 1996"> 1116:(family: Mormyridae) and 949: 905: 854: 826: 819: 781: 760:(bluntnose knifefishes) 755: 748: 740: 733: 707: 700: 690: 655: 648: 202: 195: 123:Scientific classification 121: 108: 99: 23: 3791:Electroreceptive animals 1968:Mitochondrial DNA Part B 1787:Springer-Verlag, Berlin. 1572:Albert, James S (2001). 1182:; Pauly, Daniel (eds.). 1050:Amazonian water hyacinth 1014:, ranging from southern 998:Distribution and habitat 370:Electrophorus electricus 325:Electrophorus electricus 297:South American knifefish 24:South American knifefish 2634:10.3389/fevo.2019.00264 2497:10.1242/jeb.202.10.1217 2431:The American Naturalist 2276:Journal of Fish Biology 2170:Journal of Fish Biology 1849:10.1038/s41559-016-0020 1760:Neotropical Ichthyology 563:(bluntnose knifefishes) 311:to feed), these mostly 3801:Ray-finned fish orders 1699:10.1098/rsbl.2010.0804 1630:Brain Research Reviews 1233:Encyclopedia of Fishes 1038:"floating meadows" of 1032:numbers of individuals 364:Anatomy and locomotion 228: 3722:Paleobiology Database 2784:Ampullae of Lorenzini 1910:Nature Communications 1576:. Museum of Zoology. 1184:"Order Gymnotiformes" 1060:Further information: 1010:throughout the humid 833:(banded knifefishes) 712:(ghost knifefishes) 612:mitochondrial genomes 469:Further information: 345:Eigenmannia virescens 337:Apteronotus albifrons 333:black ghost knifefish 293:Neotropical knifefish 226: 115:Apteronotus albifrons 110:Black ghost knifefish 30:Late Jurassic –Recent 2843:(electric catfishes) 1619:Bullock, Theodore H. 1110:convergent evolution 910:(glass knifefishes) 786:(sand knifefishes) 315:fish are capable of 16:Order of bony fishes 3184:Protacanthopterygii 3174:Lepidogalaxiiformes 2809:(African knifefish) 2532:1999Natur.400..254S 2288:2019JFBio..95...92C 2182:2019JFBio..95...92C 2088:2012PLoSO...736287L 2029:2012PLoSO...736287L 1923:2019NatCo..10.4000D 1880:Fishes of the World 1841:2017NatEE...1...20A 1543:2013JEZA..319..569J 1508:2018OcEng.148...75S 1465:2014Zool..117..269X 1270:2014Zool..117..337Y 1192:. Apr 2007 version. 1040:aquatic macrophytes 585:(ghost knifefishes) 475:These fish possess 3401:Cyprinodontiformes 3326:Trachichthyiformes 3280:Paracanthopterygii 3131:Alepocephaliformes 2925:orders by subclass 2239:10.1242/jeb.082362 1418:10.1242/jeb.082743 1364:10.1242/jeb.091520 1316:10.1242/jeb.019224 746:Rhamphichthyoidea 556:(sand knifefishes) 427:order to maintain 291:commonly known as 229: 3773: 3772: 3709:Open Tree of Life 3545:Taxon identifiers 3536: 3535: 3532: 3531: 3528: 3527: 3524: 3523: 3496:Tetraodontiformes 3451:Chaetodontiformes 3386:Pleuronectiformes 3341:Batrachoidiformes 3103:Osteoglossiformes 3095:Osteoglossomorpha 2888: 2887: 2780:Electroreceptors 2673:10.1111/evo.13010 2526:(6741): 254–256. 2491:(10): 1217–1228. 2297:10.1111/jfb.13922 2233:(13): 2515–2522. 2191:10.1111/jfb.13922 1496:Ocean Engineering 1411:(13): 2501–2514. 1310:(21): 3490–3503. 994: 993: 985: 984: 976: 975: 938: 937: 929: 928: 894: 893: 885: 884: 805: 804: 623:phylogenetic tree 548:Rhamphichthyoidea 221: 220: 3808: 3766: 3765: 3753: 3752: 3743: 3742: 3730: 3729: 3717: 3716: 3704: 3703: 3691: 3690: 3678: 3677: 3665: 3664: 3652: 3651: 3639: 3638: 3626: 3625: 3613: 3612: 3600: 3599: 3587: 3586: 3585: 3572: 3571: 3570: 3540: 3539: 3506:Centrarchiformes 3481:Priacanthiformes 3476:Scatophagiformes 3431:Uranoscopiformes 3376:Istiophoriformes 3366:Synbranchiformes 3331:Holocentriformes 3298:Stylephoriformes 3250:Ateleopodiformes 3136:Gonorynchiformes 3080:Notacanthiformes 3058: 3057: 3054: 3036:Lepisosteiformes 3024: 3023: 3020: 3007:Acipenseriformes 2995: 2994: 2991: 2915: 2908: 2901: 2892: 2891: 2880:Magnetoreception 2831:(elephantfishes) 2734: 2727: 2720: 2711: 2710: 2693: 2692: 2667:(9): 2134–2144. 2656: 2647: 2646: 2636: 2612: 2603: 2602: 2566: 2560: 2559: 2515: 2509: 2508: 2476: 2463: 2462: 2422: 2413: 2412: 2376: 2370: 2367: 2361: 2360: 2324: 2318: 2317: 2299: 2267: 2261: 2260: 2250: 2218: 2212: 2211: 2193: 2161: 2155: 2154: 2126: 2120: 2119: 2109: 2099: 2067: 2061: 2060: 2050: 2040: 2008: 2002: 2001: 1991: 1959: 1953: 1952: 1942: 1900: 1894: 1893: 1875: 1869: 1868: 1822: 1816: 1815: 1794: 1788: 1784: 1778: 1777: 1775: 1751: 1742: 1739: 1733: 1730: 1721: 1720: 1710: 1678: 1672: 1671: 1653: 1627: 1615: 1606: 1602: 1596: 1595: 1585: 1569: 1563: 1562: 1551:10.1002/jez.1819 1526: 1520: 1519: 1491: 1485: 1484: 1448: 1439: 1438: 1420: 1396: 1385: 1384: 1366: 1342: 1336: 1335: 1299: 1290: 1289: 1253: 1247: 1246: 1228: 1219: 1218: 1200: 1194: 1193: 1176: 967: 920: 915: 876: 871: 866: 861:(electric eels) 843: 838: 822: 821: 796: 791: 784:Rhamphichthyidae 770: 765: 751: 750: 743: 742: 736: 735: 722: 717: 703: 702: 693: 692: 679: 673: 668: 651: 650: 641: 640: 636: 630: 554:Rhamphichthyidae 429:neutral buoyancy 401:sinusoidal waves 392:fin rays during 349:banded knifefish 284:are an order of 283: 282: 279: 278: 275: 272: 269: 266: 263: 260: 257: 254: 251: 248: 245: 242: 131: 130: 104: 94: 31: 27:Temporal range: 21: 20: 3816: 3815: 3811: 3810: 3809: 3807: 3806: 3805: 3776: 3775: 3774: 3769: 3761: 3756: 3748: 3746: 3738: 3733: 3725: 3720: 3712: 3707: 3699: 3694: 3686: 3681: 3673: 3668: 3660: 3655: 3647: 3642: 3634: 3629: 3621: 3616: 3608: 3603: 3595: 3590: 3581: 3580: 3575: 3566: 3565: 3560: 3547: 3537: 3520: 3516:Scorpaeniformes 3456:Acanthuriformes 3416:Gobiesociformes 3356:Syngnathiformes 3313:Acanthopterygii 3307: 3274: 3270:Polymixiiformes 3234: 3211: 3192:Argentiniformes 3178: 3160: 3112: 3089: 3050: 3045: 3016: 3011: 2987: 2982: 2978:Polypteriformes 2964: 2926: 2919: 2889: 2884: 2858: 2849:(electric rays) 2847:Torpediniformes 2823:(electric eels) 2795: 2764: 2743: 2738: 2701: 2696: 2657: 2650: 2613: 2606: 2567: 2563: 2516: 2512: 2477: 2466: 2423: 2416: 2377: 2373: 2368: 2364: 2325: 2321: 2268: 2264: 2219: 2215: 2162: 2158: 2127: 2123: 2068: 2064: 2009: 2005: 1960: 1956: 1901: 1897: 1890: 1876: 1872: 1823: 1819: 1795: 1791: 1785: 1781: 1752: 1745: 1740: 1736: 1731: 1724: 1687:Biology Letters 1679: 1675: 1625: 1616: 1609: 1603: 1599: 1570: 1566: 1537:(10): 569–583. 1527: 1523: 1492: 1488: 1449: 1442: 1397: 1388: 1343: 1339: 1300: 1293: 1254: 1250: 1243: 1229: 1222: 1215: 1201: 1197: 1177: 1173: 1169: 1149: 1099:electrolocation 1064: 1058: 1000: 995: 986: 977: 939: 930: 895: 886: 806: 600:electrolocation 596: 497: 477:electric organs 473: 467: 440:angle of attack 390:ray-finned fish 366: 361: 353:Gymnotus carapo 341:glass knifefish 239: 235: 217: 208: 205:Gymnotus carapo 125: 95: 93: 92: 87: 82: 77: 72: 67: 62: 57: 52: 47: 42: 37: 29: 28: 25: 17: 12: 11: 5: 3814: 3804: 3803: 3798: 3793: 3788: 3771: 3770: 3768: 3767: 3754: 3744: 3731: 3718: 3705: 3692: 3679: 3666: 3653: 3640: 3627: 3614: 3601: 3588: 3573: 3557: 3555: 3549: 3548: 3534: 3533: 3530: 3529: 3526: 3525: 3522: 3521: 3519: 3518: 3513: 3508: 3503: 3501:Pempheriformes 3498: 3493: 3488: 3483: 3478: 3473: 3468: 3463: 3458: 3453: 3448: 3443: 3438: 3433: 3428: 3423: 3418: 3413: 3408: 3403: 3398: 3396:Atheriniformes 3393: 3388: 3383: 3378: 3373: 3371:Anabantiformes 3368: 3363: 3358: 3353: 3348: 3343: 3338: 3333: 3328: 3323: 3317: 3315: 3309: 3308: 3306: 3305: 3300: 3295: 3290: 3288:Percopsiformes 3284: 3282: 3276: 3275: 3273: 3272: 3267: 3262: 3260:Myctophiformes 3257: 3252: 3246: 3244: 3241:incertae sedis 3236: 3235: 3233: 3232: 3227: 3221: 3219: 3213: 3212: 3210: 3209: 3204: 3199: 3194: 3188: 3186: 3180: 3179: 3177: 3176: 3170: 3168: 3162: 3161: 3159: 3158: 3153: 3148: 3143: 3138: 3133: 3128: 3122: 3120: 3114: 3113: 3111: 3110: 3108:Hiodontiformes 3105: 3099: 3097: 3091: 3090: 3088: 3087: 3085:Anguilliformes 3082: 3077: 3072: 3066: 3064: 3055: 3047: 3046: 3044: 3043: 3038: 3032: 3030: 3021: 3013: 3012: 3010: 3009: 3003: 3001: 2992: 2984: 2983: 2981: 2980: 2974: 2972: 2966: 2965: 2963: 2962: 2956: 2950: 2944: 2938: 2931: 2928: 2927: 2923:Actinopterygii 2918: 2917: 2910: 2903: 2895: 2886: 2885: 2883: 2882: 2877: 2872: 2866: 2864: 2860: 2859: 2857: 2856: 2850: 2844: 2841:Malapteruridae 2838: 2832: 2826: 2825: 2824: 2810: 2803: 2801: 2797: 2796: 2794: 2793: 2792: 2791: 2786: 2778: 2776:Electric organ 2772: 2770: 2766: 2765: 2763: 2762: 2757: 2751: 2749: 2745: 2744: 2737: 2736: 2729: 2722: 2714: 2708: 2707: 2700: 2699:External links 2697: 2695: 2694: 2648: 2604: 2577:(5): 485–491. 2561: 2510: 2464: 2443:10.1086/655221 2437:(3): 335–356. 2414: 2387:(2): 324–343. 2371: 2362: 2335:(6): 769–777. 2319: 2262: 2213: 2156: 2121: 2062: 2003: 1974:(1): 401–403. 1954: 1895: 1889:978-1118342336 1888: 1870: 1817: 1806:(4): 297–353. 1789: 1779: 1743: 1734: 1722: 1693:(2): 197–200. 1673: 1607: 1597: 1564: 1521: 1486: 1459:(4): 269–281. 1440: 1386: 1357:(2): 201–213. 1337: 1291: 1264:(5): 337–348. 1248: 1241: 1220: 1214:978-0691170749 1213: 1195: 1180:Froese, Rainer 1170: 1168: 1165: 1164: 1163: 1155: 1148: 1145: 1057: 1054: 999: 996: 992: 991: 988: 987: 983: 982: 979: 978: 974: 973: 970: 969: 962:, and allies) 948: 945: 944: 941: 940: 936: 935: 932: 931: 927: 926: 923: 922: 904: 901: 900: 897: 896: 892: 891: 888: 887: 883: 882: 879: 878: 853: 850: 849: 846: 845: 825: 820: 818: 812: 811: 808: 807: 803: 802: 799: 798: 780: 777: 776: 773: 772: 754: 749: 747: 741: 739: 734: 732: 729: 728: 725: 724: 706: 701: 699: 691: 689: 686: 685: 682: 681: 654: 649: 647: 639: 608:Anguilliformes 595: 592: 591: 590: 589: 588: 587: 586: 579: 570:Apteronotoidea 566: 565: 564: 557: 542:Sternopygoidei 538: 537: 536: 535: 534: 496: 493: 491:to stun prey. 466: 463: 456:center of mass 407:, however the 365: 362: 360: 357: 331:, such as the 329:aquarium trade 309:brackish water 219: 218: 209: 200: 199: 193: 192: 187: 183: 182: 177: 173: 172: 170:Actinopterygii 167: 163: 162: 157: 153: 152: 147: 143: 142: 137: 133: 132: 119: 118: 106: 105: 97: 96: 88: 83: 78: 73: 68: 63: 58: 53: 48: 43: 38: 33: 26: 15: 9: 6: 4: 3: 2: 3813: 3802: 3799: 3797: 3794: 3792: 3789: 3787: 3786:Gymnotiformes 3784: 3783: 3781: 3764: 3759: 3755: 3751: 3745: 3741: 3736: 3732: 3728: 3723: 3719: 3715: 3710: 3706: 3702: 3697: 3693: 3689: 3684: 3680: 3676: 3671: 3667: 3663: 3658: 3654: 3650: 3645: 3641: 3637: 3632: 3628: 3624: 3619: 3615: 3611: 3606: 3602: 3598: 3597:Gymnotiformes 3593: 3589: 3584: 3583:Gymnotiformes 3578: 3574: 3569: 3563: 3559: 3558: 3556: 3554: 3553:Gymnotiformes 3550: 3546: 3541: 3517: 3514: 3512: 3509: 3507: 3504: 3502: 3499: 3497: 3494: 3492: 3489: 3487: 3484: 3482: 3479: 3477: 3474: 3472: 3469: 3467: 3464: 3462: 3461:Lutjaniformes 3459: 3457: 3454: 3452: 3449: 3447: 3446:Ephippiformes 3444: 3442: 3439: 3437: 3434: 3432: 3429: 3427: 3424: 3422: 3421:Blenniiformes 3419: 3417: 3414: 3412: 3409: 3407: 3404: 3402: 3399: 3397: 3394: 3392: 3389: 3387: 3384: 3382: 3381:Carangiformes 3379: 3377: 3374: 3372: 3369: 3367: 3364: 3362: 3361:Scombriformes 3359: 3357: 3354: 3352: 3349: 3347: 3344: 3342: 3339: 3337: 3336:Ophidiiformes 3334: 3332: 3329: 3327: 3324: 3322: 3319: 3318: 3316: 3314: 3310: 3304: 3301: 3299: 3296: 3294: 3291: 3289: 3286: 3285: 3283: 3281: 3277: 3271: 3268: 3266: 3263: 3261: 3258: 3256: 3253: 3251: 3248: 3247: 3245: 3243: 3242: 3237: 3231: 3228: 3226: 3223: 3222: 3220: 3218: 3214: 3208: 3205: 3203: 3202:Salmoniformes 3200: 3198: 3197:Galaxiiformes 3195: 3193: 3190: 3189: 3187: 3185: 3181: 3175: 3172: 3171: 3169: 3167: 3166:Lepidogalaxii 3163: 3157: 3154: 3152: 3151:Gymnotiformes 3149: 3147: 3146:Characiformes 3144: 3142: 3141:Cypriniformes 3139: 3137: 3134: 3132: 3129: 3127: 3124: 3123: 3121: 3119: 3115: 3109: 3106: 3104: 3101: 3100: 3098: 3096: 3092: 3086: 3083: 3081: 3078: 3076: 3073: 3071: 3068: 3067: 3065: 3063: 3059: 3056: 3053: 3048: 3042: 3039: 3037: 3034: 3033: 3031: 3029: 3025: 3022: 3019: 3014: 3008: 3005: 3004: 3002: 3000: 2996: 2993: 2990: 2985: 2979: 2976: 2975: 2973: 2971: 2967: 2961: 2957: 2955: 2954:Gnathostomata 2951: 2949: 2945: 2943: 2939: 2937: 2933: 2932: 2929: 2924: 2916: 2911: 2909: 2904: 2902: 2897: 2896: 2893: 2881: 2878: 2876: 2873: 2871: 2868: 2867: 2865: 2861: 2854: 2853:Uranoscopidae 2851: 2848: 2845: 2842: 2839: 2836: 2833: 2830: 2827: 2822: 2821: 2820:Electrophorus 2817: 2816: 2814: 2813:Gymnotiformes 2811: 2808: 2805: 2804: 2802: 2798: 2790: 2787: 2785: 2782: 2781: 2779: 2777: 2774: 2773: 2771: 2767: 2761: 2758: 2756: 2753: 2752: 2750: 2746: 2742: 2741:Electric fish 2735: 2730: 2728: 2723: 2721: 2716: 2715: 2712: 2706: 2703: 2702: 2690: 2686: 2682: 2678: 2674: 2670: 2666: 2662: 2655: 2653: 2644: 2640: 2635: 2630: 2626: 2622: 2618: 2611: 2609: 2600: 2596: 2592: 2588: 2584: 2580: 2576: 2572: 2565: 2557: 2553: 2549: 2545: 2541: 2540:10.1038/22301 2537: 2533: 2529: 2525: 2521: 2514: 2506: 2502: 2498: 2494: 2490: 2486: 2482: 2475: 2473: 2471: 2469: 2460: 2456: 2452: 2448: 2444: 2440: 2436: 2432: 2428: 2421: 2419: 2410: 2406: 2402: 2398: 2394: 2390: 2386: 2382: 2375: 2366: 2358: 2354: 2350: 2346: 2342: 2338: 2334: 2330: 2323: 2315: 2311: 2307: 2303: 2298: 2293: 2289: 2285: 2282:(1): 92–134. 2281: 2277: 2273: 2266: 2258: 2254: 2249: 2244: 2240: 2236: 2232: 2228: 2224: 2217: 2209: 2205: 2201: 2197: 2192: 2187: 2183: 2179: 2176:(1): 92–134. 2175: 2171: 2167: 2160: 2152: 2148: 2144: 2140: 2136: 2132: 2125: 2117: 2113: 2108: 2103: 2098: 2093: 2089: 2085: 2082:(5): e36287. 2081: 2077: 2073: 2066: 2058: 2054: 2049: 2044: 2039: 2034: 2030: 2026: 2023:(5): e36287. 2022: 2018: 2014: 2007: 1999: 1995: 1990: 1985: 1981: 1977: 1973: 1969: 1965: 1958: 1950: 1946: 1941: 1936: 1932: 1928: 1924: 1920: 1916: 1912: 1911: 1906: 1899: 1891: 1885: 1881: 1874: 1866: 1862: 1858: 1854: 1850: 1846: 1842: 1838: 1834: 1830: 1821: 1813: 1809: 1805: 1801: 1793: 1783: 1774: 1769: 1765: 1761: 1757: 1750: 1748: 1738: 1729: 1727: 1718: 1714: 1709: 1704: 1700: 1696: 1692: 1688: 1684: 1677: 1669: 1665: 1661: 1657: 1652: 1651:2027.42/25137 1647: 1643: 1639: 1635: 1631: 1624: 1620: 1614: 1612: 1601: 1593: 1589: 1584: 1583:2027.42/56433 1579: 1575: 1568: 1560: 1556: 1552: 1548: 1544: 1540: 1536: 1532: 1525: 1517: 1513: 1509: 1505: 1501: 1497: 1490: 1482: 1478: 1474: 1470: 1466: 1462: 1458: 1454: 1447: 1445: 1436: 1432: 1428: 1424: 1419: 1414: 1410: 1406: 1402: 1395: 1393: 1391: 1382: 1378: 1374: 1370: 1365: 1360: 1356: 1352: 1348: 1341: 1333: 1329: 1325: 1321: 1317: 1313: 1309: 1305: 1298: 1296: 1287: 1283: 1279: 1275: 1271: 1267: 1263: 1259: 1252: 1244: 1242:0-12-547665-5 1238: 1234: 1227: 1225: 1216: 1210: 1206: 1199: 1191: 1190: 1185: 1181: 1175: 1171: 1161: 1160: 1156: 1154: 1153:Electric fish 1151: 1150: 1144: 1140: 1136: 1134: 1130: 1126: 1125:E. electricus 1121: 1119: 1115: 1111: 1106: 1102: 1100: 1096: 1092: 1087: 1085: 1081: 1077: 1074:are from the 1073: 1069: 1063: 1062:Electric fish 1053: 1051: 1047: 1046: 1041: 1037: 1033: 1029: 1025: 1021: 1017: 1013: 1009: 1005: 990: 989: 981: 980: 972: 971: 968: 966: 961: 957: 953: 947: 946: 943: 942: 934: 933: 925: 924: 921: 919: 914: 909: 908:Sternopygidae 903: 902: 899: 898: 890: 889: 881: 880: 877: 875: 870: 865: 860: 859: 858:Electrophorus 852: 851: 848: 847: 844: 842: 837: 832: 831: 824: 823: 817: 814: 813: 810: 809: 801: 800: 797: 795: 790: 785: 779: 778: 775: 774: 771: 769: 764: 759: 753: 752: 745: 744: 738: 737: 731: 730: 727: 726: 723: 721: 716: 711: 710:Apteronotidae 705: 704: 698: 697:Gymnotiformes 695: 694: 688: 687: 684: 683: 680: 678: 672: 667: 663: 659: 653: 652: 646: 643: 642: 638: 635: 629: 624: 619: 617: 613: 609: 605: 604:Electrophorus 601: 584: 583:Apteronotidae 580: 577: 576:Sternopygidae 573: 572: 571: 567: 562: 558: 555: 551: 550: 549: 545: 544: 543: 539: 532: 528: 527: 526: 525: 524: 520: 519: 518: 517: 516:Gymnotiformes 512: 510: 506: 502: 492: 490: 486: 481: 478: 472: 462: 459: 457: 453: 452:pectoral fins 449: 445: 441: 436: 434: 430: 424: 422: 418: 414: 413:Kármán vortex 410: 406: 402: 397: 395: 391: 386: 383: 379: 375: 371: 356: 354: 350: 346: 342: 338: 334: 330: 326: 322: 318: 314: 310: 306: 302: 298: 294: 290: 287: 281: 234: 233:Gymnotiformes 225: 216: 212: 207: 206: 201: 198: 194: 191: 190:Gymnotiformes 188: 185: 184: 181: 178: 175: 174: 171: 168: 165: 164: 161: 158: 155: 154: 151: 148: 145: 144: 141: 138: 135: 134: 129: 124: 120: 117: 116: 111: 107: 103: 98: 91: 86: 81: 76: 71: 66: 61: 56: 51: 46: 41: 36: 22: 19: 3552: 3491:Lophiiformes 3486:Caproiformes 3466:Lobotiformes 3441:Moroniformes 3426:Gerreiformes 3411:Mugiliformes 3406:Beloniformes 3391:Cichliformes 3321:Beryciformes 3265:Lampriformes 3255:Aulopiformes 3239: 3230:Stomiiformes 3225:Osmeriformes 3156:Siluriformes 3150: 3126:Clupeiformes 3075:Albuliformes 2960:Osteichthyes 2952:Infraphylum 2875:Lateral line 2855:(stargazers) 2819: 2812: 2807:Gymnarchidae 2789:Knollenorgan 2664: 2660: 2624: 2620: 2574: 2570: 2564: 2523: 2519: 2513: 2488: 2484: 2434: 2430: 2384: 2380: 2374: 2365: 2332: 2328: 2322: 2279: 2275: 2265: 2230: 2226: 2216: 2173: 2169: 2159: 2137:(1): 17–25. 2134: 2130: 2124: 2079: 2075: 2065: 2020: 2016: 2006: 1971: 1967: 1957: 1914: 1908: 1898: 1879: 1873: 1832: 1828: 1820: 1803: 1799: 1792: 1782: 1763: 1759: 1737: 1690: 1686: 1676: 1636:(1): 25–46. 1633: 1629: 1600: 1573: 1567: 1534: 1530: 1524: 1499: 1495: 1489: 1456: 1452: 1408: 1404: 1354: 1350: 1340: 1307: 1303: 1261: 1257: 1251: 1232: 1204: 1198: 1187: 1174: 1157: 1141: 1137: 1132: 1128: 1124: 1122: 1117: 1113: 1107: 1103: 1088: 1068:Ostariophysi 1065: 1043: 1018:to northern 1001: 950: 906: 856: 855: 828: 827: 782: 756: 708: 696: 661: 658:Siluriformes 656: 620: 603: 597: 569: 568:Superfamily 547: 546:Superfamily 541: 522: 515: 513: 505:Siluriformes 498: 482: 474: 460: 437: 425: 398: 387: 369: 367: 352: 344: 336: 324: 321:electric eel 296: 292: 232: 230: 203: 197:Type species 189: 176:(unranked): 113: 18: 3657:iNaturalist 3577:Wikispecies 3511:Perciformes 3471:Spariformes 3436:Labriformes 3351:Gobiiformes 3346:Kurtiformes 3207:Esociformes 3070:Elopiformes 3062:Elopomorpha 3018:Neopterygii 2999:Chondrostei 2989:Actinopteri 2958:Superclass 1917:(1): 4000. 1022:. They are 952:Characoidei 758:Hypopomidae 660:(catfish) ( 616:sister taxa 561:Hypopomidae 523:Gymnotoidei 421:caudal fins 409:wake vortex 378:dorsal fins 374:pelvic fins 359:Description 347:), and the 305:fresh water 289:bony fishes 3780:Categories 3303:Gadiformes 3118:Otocephala 3041:Amiiformes 2948:Vertebrata 2946:Subphylum 2835:Rajiformes 2829:Mormyridae 2748:Physiology 1502:: 75–114. 1167:References 1159:Gymnarchus 1095:Mormyridae 1045:Eichornium 1036:floodplain 1012:Neotropics 816:Gymnotidae 531:Gymnotidae 509:Cretaceous 485:millivolts 394:locomotion 3293:Zeiformes 3052:Teleostei 2970:Cladistia 2661:Evolution 2643:195856052 2556:204994529 2381:Evolution 1835:(2): 20. 1592:248781367 1056:Evolution 1024:nocturnal 1020:Argentina 594:Phylogeny 540:Suborder 521:Suborder 382:anal fins 313:nocturnal 146:Kingdom: 140:Eukaryota 3562:Wikidata 3217:Stomiati 3028:Holostei 2942:Chordata 2936:Animalia 2934:Kingdom 2837:(skates) 2681:27436179 2591:14692496 2548:10421365 2505:10210663 2459:16787431 2451:20653442 2409:14178144 2401:15807419 2357:39794542 2314:73442571 2306:30729523 2257:23761476 2208:73442571 2200:30729523 2151:35007130 2116:22606250 2076:PLOS ONE 2057:22606250 2017:PLOS ONE 1998:33473497 1949:31506444 1865:16535732 1857:28812610 1717:20980295 1668:15603518 1559:24039242 1481:24925455 1435:14992273 1427:23761475 1373:24072799 1332:10911068 1324:18931321 1286:25043841 1189:FishBase 1147:See also 1133:Gymnotus 1129:Gymnotus 1118:Gymnotus 1114:Mormyrus 956:piranhas 830:Gymnotus 645:Otophysi 495:Taxonomy 301:anal fin 211:Linnaeus 180:Otophysi 160:Chordata 156:Phylum: 150:Animalia 136:Domain: 3568:Q752264 2940:Phylum 2921:Extant 2863:Related 2769:Anatomy 2689:1064883 2627:: 264. 2599:6240530 2528:Bibcode 2349:8805421 2284:Bibcode 2248:4988487 2178:Bibcode 2107:3351409 2084:Bibcode 2048:3351409 2025:Bibcode 1989:7799549 1940:6736962 1919:Bibcode 1837:Bibcode 1708:3061176 1660:6616267 1539:Bibcode 1504:Bibcode 1461:Bibcode 1453:Zoology 1381:2656865 1266:Bibcode 1258:Zoology 1084:Bolivia 1076:Miocene 1072:fossils 1042:(e.g., 1028:diverse 1008:streams 581:Family 574:Family 559:Family 552:Family 529:Family 339:), the 286:teleost 186:Order: 166:Class: 3763:154244 3750:113900 3747:uBio: 3714:216180 3688:553135 2800:Groups 2687:  2679:  2641:  2597:  2589:  2554:  2546:  2520:Nature 2503:  2457:  2449:  2407:  2399:  2355:  2347:  2312:  2304:  2255:  2245:  2206:  2198:  2149:  2114:  2104:  2055:  2045:  1996:  1986:  1947:  1937:  1886:  1863:  1855:  1715:  1705:  1666:  1658:  1590:  1557:  1479:  1433:  1425:  1379:  1371:  1330:  1322:  1284:  1239:  1211:  1091:Africa 1048:, the 1016:Mexico 1004:rivers 960:tetras 514:Order 3758:WoRMS 3735:Plazi 3727:92061 3675:10812 3670:IRMNG 3662:52559 3623:623BF 2685:S2CID 2639:S2CID 2595:S2CID 2552:S2CID 2455:S2CID 2405:S2CID 2353:S2CID 2310:S2CID 2204:S2CID 2147:S2CID 1861:S2CID 1766:(1). 1664:S2CID 1626:(PDF) 1431:S2CID 1377:S2CID 1328:S2CID 1082:) of 448:pitch 433:heave 417:trout 3701:8002 3696:NCBI 3683:ITIS 3649:1165 3644:GBIF 3636:5477 3605:BOLD 2677:PMID 2587:PMID 2544:PMID 2501:PMID 2447:PMID 2397:PMID 2345:PMID 2302:PMID 2253:PMID 2196:PMID 2112:PMID 2053:PMID 1994:PMID 1945:PMID 1884:ISBN 1853:PMID 1713:PMID 1656:PMID 1588:OCLC 1555:PMID 1477:PMID 1423:PMID 1369:PMID 1320:PMID 1282:PMID 1237:ISBN 1209:ISBN 1006:and 662:some 446:and 444:roll 376:nor 231:The 215:1758 35:PreꞒ 3631:EoL 3618:CoL 3610:265 3592:ADW 2669:doi 2629:doi 2579:doi 2536:doi 2524:400 2493:doi 2489:202 2439:doi 2435:176 2389:doi 2337:doi 2292:doi 2243:PMC 2235:doi 2231:216 2186:doi 2139:doi 2102:PMC 2092:doi 2043:PMC 2033:doi 1984:PMC 1976:doi 1935:PMC 1927:doi 1845:doi 1808:doi 1768:doi 1703:PMC 1695:doi 1646:hdl 1638:doi 1605:NH. 1578:hdl 1547:doi 1535:319 1512:doi 1500:148 1469:doi 1457:117 1413:doi 1409:216 1359:doi 1355:217 1312:doi 1308:211 1274:doi 1262:117 1080:Mya 674:) 405:eel 355:). 295:or 268:ɔːr 3782:: 3760:: 3737:: 3724:: 3711:: 3698:: 3685:: 3672:: 3659:: 3646:: 3633:: 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2645:. 2631:: 2625:7 2601:. 2581:: 2558:. 2538:: 2530:: 2507:. 2495:: 2461:. 2441:: 2411:. 2391:: 2359:. 2339:: 2333:5 2316:. 2294:: 2286:: 2259:. 2237:: 2210:. 2188:: 2180:: 2153:. 2141:: 2118:. 2094:: 2086:: 2080:7 2059:. 2035:: 2027:: 2021:7 2000:. 1978:: 1972:1 1951:. 1929:: 1921:: 1892:. 1867:. 1847:: 1839:: 1833:1 1814:. 1810:: 1776:. 1770:: 1719:. 1697:: 1691:7 1670:. 1648:: 1640:: 1634:6 1594:. 1580:: 1561:. 1549:: 1541:: 1518:. 1514:: 1506:: 1483:. 1471:: 1463:: 1437:. 1415:: 1383:. 1361:: 1334:. 1314:: 1288:. 1276:: 1268:: 1245:. 1217:. 954:( 351:( 343:( 335:( 323:( 280:/ 277:z 271:m 265:f 262:ɪ 259:t 256:ɒ 253:n 250:ˈ 247:m 244:ɪ 238:/ 90:N 80:K 75:J 70:T 65:P 60:C 55:D 50:S 45:O 40:Ꞓ

Index

PreꞒ

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S
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Pg
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Black ghost knifefish
Apteronotus albifrons
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Actinopterygii
Otophysi
Gymnotiformes
Type species
Gymnotus carapo
Linnaeus
1758

/ɪmˈnɒtɪfɔːrmz/
teleost

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