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Fish Identification: Find Species

Class: Actinopterygii
Order: Gymnotiformes
Family: Gymnotidae Naked-back knifefishes

Genus: Gymnotus

(See list of species below)


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39 species (see list below)

1 of 1 Jump to:

Photo by Holm, E.

South America
Max. Length 30 cm SL
Gymnotus anguillaris Hoedeman, 1962

Photo by Holm, E.
 
Gymnotus anguillaris
[]
No picture found
South America
Max. Length 55 cm TL
 
Gymnotus arapaima
[]
No picture found
South America
 
Gymnotus ardilai
[]
No picture found
South America
Max. Length 27.6 cm TL
 
Gymnotus bahianus
[]
No picture found
South America
Max. Length 17.9 cm TL
 
Gymnotus capanema
[]
No picture found
South America
Max. Length 15.8 cm TL
 
Gymnotus capitimaculatus
[]

Photo by Landines, M.

Central and South America
Max. Length 76 cm TL
Gymnotus carapo Linnaeus, 1758

Photo by Landines, M.
 
Gymnotus carapo
[Banded knifefish]

Photo by JJPhoto

South America
Max. Length 31.6 cm TL
Gymnotus cataniapo Mago-Leccia, 1994

Photo by JJPhoto
 
Gymnotus cataniapo
[]
No picture found
South America
Max. Length 27.5 cm SL
 
Gymnotus chaviro
[]
No picture found
South America
Max. Length 23.7 cm TL
 
Gymnotus chimarrao
[]
No picture found
South America
Max. Length 26 cm TL
 
Gymnotus choco
[]
No picture found
South America
Max. Length 30 cm TL
 
Gymnotus coatesi
[]
No picture found
South America
Max. Length 34.5 cm SL
 
Gymnotus coropinae
[]
No picture found
South America
Max. Length 23.5 cm TL
 
Gymnotus curupira
[]

Photo by Molina, A.

Central America

Gymnotus cylindricus La Monte, 1935

Photo by Molina, A.
 
Gymnotus cylindricus
[]
No picture found
South America
Max. Length 12.5 cm TL
 
Gymnotus diamantinensis
[]
No picture found
South America
Max. Length 30.9 cm TL
 
Gymnotus esmeraldas
[]
No picture found
South America
Max. Length 31.2 cm SL
 
Gymnotus henni
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 60 cm TL
Gymnotus inaequilabiatus (Valenciennes, 1839)

Photo by Equipe de Ictiologia do Nupélia
 
Gymnotus inaequilabiatus
[]
No picture found
South America
Max. Length 12.1 cm TL
 
Gymnotus interruptus
[]
No picture found
South America
Max. Length 20.1 cm TL
 
Gymnotus javari
[]
No picture found
South America
Max. Length 13.5 cm TL
 
Gymnotus jonasi
[]

Photo by Molina, A.

Central America.

Gymnotus maculosus Albert & Miller, 1995

Photo by Molina, A.
 
Gymnotus maculosus
[Spotted knifefish]
No picture found
South America
Max. Length 24.3 cm TL
 
Gymnotus mamiraua
[]
No picture found
South America
Max. Length 10 cm TL
 
Gymnotus melanopleura
[]
No picture found
South America
Max. Length 21.5 cm TL
 
Gymnotus obscurus
[]

Photo by Albert, J.S.

South America

Gymnotus omarorum Richer-de-Forges, Crampton & Albert, 2009

Photo by Albert, J.S.
 
Gymnotus omarorum
[]
No picture found
South America
Max. Length 12 cm TL
 
Gymnotus onca
[]
No picture found
Central America
Max. Length 23.6 cm TL
 
Gymnotus panamensis
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 25.1 cm SL
Gymnotus pantanal Fernandes, Albert, Daniel-Silva, Lopes, Crampton & Almeida-Toledo, 2005

Photo by Equipe de Ictiologia do Nupélia
 
Gymnotus pantanal
[]

Photo by Sazima, I.

South America
Max. Length 23.6 cm TL
Gymnotus pantherinus (Steindachner, 1908)

Photo by Sazima, I.
 
Gymnotus pantherinus
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 24 cm SL
Gymnotus paraguensis Albert & Crampton, 2003

Photo by Equipe de Ictiologia do Nupélia
 
Gymnotus paraguensis
[]
No picture found
South America
Max. Length 28.1 cm TL
 
Gymnotus pedanopterus
[]
No picture found
South America
Max. Length 14.2 cm TL
 
Gymnotus stenoleucus
[]

Photo by Sazima, I.

South America
Max. Length 8.4 cm TL
Gymnotus sylvius Albert & Fernandes-Matioli, 1999

Photo by Sazima, I.
 
Gymnotus sylvius
[]
No picture found
South America
Max. Length 41.1 cm TL
 
Gymnotus tigre
[]
No picture found
South America
Max. Length 24 cm TL
 
Gymnotus tiquie
[]
No picture found
South America
Max. Length 19 cm TL
 
Gymnotus ucamara
[]
No picture found
South America
Max. Length 28.5 cm TL
 
Gymnotus varzea
[]
39 Species of Family Gymnotidae with Genus Gymnotus
(Naked-back knifefishes)
Sort by: Species Length Year
1 of 1 Jump to:
Year Scientific Name English Name Distribution Max. Length (cm)
1962 Gymnotus anguillaris South America 30 SL
2001 Gymnotus arapaima South America 55 TL
2004 Gymnotus ardilai South America
1996 Gymnotus bahianus South America 27.6 TL
2012 Gymnotus capanema South America 17.9 TL
2014 Gymnotus capitimaculatus South America 15.8 TL
1758 Gymnotus carapo Banded knifefish Central and South America 76 TL
1994 Gymnotus cataniapo South America 31.6 TL
2009 Gymnotus chaviro South America 27.5 SL
2008 Gymnotus chimarrao South America 23.7 TL
2003 Gymnotus choco South America 26 TL
1935 Gymnotus coatesi South America 30 TL
1962 Gymnotus coropinae South America 34.5 SL
2005 Gymnotus curupira South America 23.5 TL
1935 Gymnotus cylindricus Central America
2002 Gymnotus diamantinensis South America 12.5 TL
2003 Gymnotus esmeraldas South America 30.9 TL
2003 Gymnotus henni South America 31.2 SL
1839 Gymnotus inaequilabiatus South America 60 TL
2012 Gymnotus interruptus South America 12.1 TL
2003 Gymnotus javari South America 20.1 TL
2001 Gymnotus jonasi South America 13.5 TL
1995 Gymnotus maculosus Spotted knifefish Central America.
2001 Gymnotus mamiraua South America 24.3 TL
2001 Gymnotus melanopleura South America 10 TL
2005 Gymnotus obscurus South America 21.5 TL
2009 Gymnotus omarorum South America
2001 Gymnotus onca South America 12 TL
2003 Gymnotus panamensis Central America 23.6 TL
2005 Gymnotus pantanal South America 25.1 SL
1908 Gymnotus pantherinus South America 23.6 TL
2003 Gymnotus paraguensis South America 24 SL
1994 Gymnotus pedanopterus South America 28.1 TL
1994 Gymnotus stenoleucus South America 14.2 TL
1999 Gymnotus sylvius South America 8.4 TL
2003 Gymnotus tigre South America 41.1 TL
2011 Gymnotus tiquie South America 24 TL
2003 Gymnotus ucamara South America 19 TL
2005 Gymnotus varzea South America 28.5 TL



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cfm script by eagbayani, 30.11.04, ,  php script by cmilitante, 05/11/2010 ,  last modified by cmilitante, 14/03/2013