Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Acestrorhamphinae
Etymology: Oligosarcus: Greek, oligos = small + Greek arkos = anus (Ref. 45335); varii: Named for Richard P. Vari for his outstanding contribution to the knowledge of South American freshwater fishes.
Eponymy: Dr Richard Peter Vari (1949–2016) was a curator of fish at the Smithsonian. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Subtropical
South America: Rio Jacuí basin in Rio Grande do Sul, Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 19.7 cm SL male/unsexed; (Ref. 104692)
Short description
Identification keys | Morphology | Morphometrics
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Menezes, N.A. and A.C. Ribeiro, 2015. A new species of the lowland Oligosarcus Günther species group (Teleostei: Ostariophysi: Characidae). Neotrop. Ichthyol. 13(3):541-546. (Ref. 104692)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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