Teleostei (teleosts) >
Characiformes (Characins) >
Acestrorhynchidae (Smallscale pike characins) > Acestrorhynchinae
Etymology: Acestrorhynchus: Greek, agkistron = hook + Greek, rhyngchos = snout (Ref. 45335).
More on author: Cope.
Issue
See Menezes, 1969:78 for detailed description.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Amazon and Orinoco River basins. Also found in Rio Negro basin (Ref. 52916).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.8 cm SL male/unsexed; (Ref. 111115)
Bifurcated canals of the lateral line scales; 52 scale rows between the lateral line and base of the dorsal fin; and 31-35 scale rows between the lateral line and the base of the anal fin (Ref. 52916).
Body shape (shape guide): elongated.
Inhabits clear and black-water rivers (Ref. 52916). Feeds on fishes (Ref. 598).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Menezes, N.A., 2003. Family Acestrorhynchidae (Acestrorhynchids). p. 231-233. 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. 38248)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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