Oligosarcus varii
Oligosarcus varii Menezes & Ribeiro, 2015


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Family:  Acestrorhamphidae (American tetras), subfamily: Acestrorhamphinae
Max. size:  19.7 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Rio Jacuí basin in Rio Grande do Sul, Brazil.
Diagnosis:  Dorsal soft rays (total): 11-11. Description: dorsal-fin rays ii,9; anal-fin rays iv-v,21-24; pectoral-fin rays i,11-14; pelvic-fin rays i,7 ; dark oval-shaped spot near middle inner border of opercle; vertically elongate dark humeral blotch wider dorsally and tapering ventrally covering second, third and fourth anterior perforated scales of lateral line (Ref. 104692).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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