Eigenmannia nigra Mago-Leccia, 1994

Family:  Sternopygidae (Glass knifefishes)
Max. size:  47.6 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Rio Negro basin and Rio Casiquiare in Venezuela and also from the Colombian Amazonia (Leticia) and the Rupununi River in Guyana.
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 0-0; Anal soft rays: 231-247. Peculiar black phase coloration and large size. No horizontal dark stripes on body; anal fin either completely black or with dark margin; a marked dark humeral blotch; dorsal head profile strongly convex; snout length less than two eye diameters; interocular distance 30-40% in head length; gape almost the length of the snout; pectoral fin 69-75% in head length.
IUCN Red List Status: Not Evaluated (N.E.) Ref. (126983)
Threat to humans:  harmless

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