Teleostei (teleosts) >
Gymnotiformes (Knifefishes) >
Hypopomidae (Bluntnose knifefishes)
Etymology: Hypopygus: Greek, hypo = under + Greek, pyge = tail (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Orinoco and Amazon River basins and coastal rivers of the Guianas.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.2 cm SL male/unsexed; (Ref. 131234)
Occurs in shallow creeks with a sandy substrate (Ref. 12225). Maximum length reported to reach 10 cm TL (Ref. 12225).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ferraris, C.J. Jr., 2003. Rhamphichthyidae (Sand knifefishes). p. 492-493. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36685)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Fisheries: commercial; aquarium: commercial
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