Morphology Data of Gymnotus curupira
Identification keys
Main Ref. Crampton, W.G.R., D.H. Thorsen and J.S. Albert, 2005
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth superior

Distinguished from its congeners endemic to the Amazon and Orinoco basins and the Guyana Shield in having a color pattern of 14-20 oblique, dark, pigment bands with wavy and irregular margins in which the majority of bands are branched ventrally to form inverted Y-shaped patterns (in adults), in which the dark bands are about twice as broad as the pale interbands and in which the bands rarely form X-shaped patterns at midbody. Further differs in having the following unique combination of characters: clear (unpigmented) patch at the caudal end of the anal-fin membrane in specimens 6-23.5 cm; bands never divided to form band pairs (Ref. 55508).

Ease of Identification

Meristic characteristics of Gymnotus curupira

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 104 - 140
Scales in lateral series
Scale rows above lateral line 5 - 8
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
preanal 34 - 36


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total 0 - 0
Soft-rays total 0 - 0
Adipose fin absent

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total 230 - 320

Paired fins

Pectoral Attributes  
Soft-rays   16 - 17
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17