Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Orinoco and Negro River basins.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 25.6 cm SL male/unsexed; (Ref. 30270)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 31. Distinguished from congeners by the following combination of characters: body very slender, depth 18.4-23.4% SL: head length 20.6-26.6% SL; snout length 8.1-10.8% SL; upper jaw length 4.3-7.2% SL; mouth subterminal; all fins and lower portion of the head cherry red in adults; caudal fin with broadly blackened distal margin; upper jaw darkly pigmented, appearing as a mustache; lateral stripe, when present, from opercle margin to tip of middle caudal rays; anal fin rays 11(one specimen with 10); lateral line scales 36-41; scales above lateral line 4-5; scales below lateral line 4 (one specimen with 5); premaxillary teeth 4 (one specimen with 3); and dentary teeth 3-4 (Ref. 30270).
Body shape (shape guide): fusiform / normal.
Distinct pairs breed on densely grown weedy places (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairs breed on densely grown weedy places (Ref. 205).
Chernoff, B., A. Machado-Allison and W.G. Saul, 1991. Morphology, variation and biogeography of Leporinus brunneus (Pisces: Characiformes: Anostomidae). Ichthyol. Explor. Freshwat. 1(4):295-306. (Ref. 30270)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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