Teleostei (teleosts) >
Gymnotiformes (Knifefishes) >
Apteronotidae (Ghost knifefishes) > Apteronotinae
Etymology: Sternarchella: Greek, sternon = sternon, + Greek, diminutive, archos = anus (Ref. 45335).
More on author: Starks.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Amazon and Orinoco River basins (living in the main channel of large rivers).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm TL male/unsexed; (Ref. 36886)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal soft rays: 197 - 215. Mouth subterminal; dorsal profile of body smoothly convex and almost straight ventrally; greatest body depth 11-13% in length to end of anal fin (LEA) and 13-15% of anal fin base; head length 13-17% in LEA and 15-21% of anal fin base; anal fin origin at level of gill opening; anal rays 197-215.
Body shape (shape guide): elongated.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Evans, K.M., W.G.R. Crampton and J.S. Albert, 2017. Taxonomic revision of the deep channel electric fish genus Sternarchella (Teleostei: Gymnotiformes: Apteronotidae), with descriptions of two new species. Neotrop. Ichthyol. 15(2):1-30. (Ref. 126780)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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