Classification / Names
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Teleostei (teleosts) >
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Hyphessobryconinae
Etymology: Hyphessobrycon: Greek, hyphesson, -on, -on = a little smaller + Greek, bryko = to bite (Ref. 45335); tuyensis: Named for its type locality, the Tuy River of the Caribbean slope of Venezuela.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: known only from the type locality in the Tuy River drainage of northern Venezuela.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.1 cm SL male/unsexed; (Ref. 79635)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 11; Anal soft rays: 24 - 25; Vertebrae: 32. Distinguished from other species of the genus in having the following characters: inner premaxilla row with 4 teeth; lateral line with 7 pored scales, except in Hyphessobrycon compressus with 7-9; dentary with 6 teeth; maxilla with 2 foramina; mouth subterminal; long bony laminar prolongation on postcleithrum 3 that is 3/4 of the length of that bone; and a continuous dark lateral band from posterior edge of opercle through central caudal-fin rays, except in Hyphessobrycon sovichthys (Ref. 79635).
Body shape (shape guide): fusiform / normal.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
García-Alzate, C.A., C. Román-Valencia and D.C. Taphorn, 2008. Revision of the Hyphessobrycon heterorhabdus-group (Teleostei: Characiformes: Characidae), with description of two new species from Venezuela. Vertebrate Zoology 58(2):139-157. (Ref. 79635)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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