Odontesthes Orientalis (Odontesthes orientalis), first described by de Buen, 1950 is a fish in the family Atherinopsidae (order Atheriniformes). It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Temperate waters. It feeds on a mix of small fish and invertebrates as a mid-level predator.
Scales in lateral line series over lateral band 51 .: elongated.
Behavioural data for Odontesthes Orientalis is currently being reviewed.
Freshwater; benthopelagic. Temperate South America: Río de la Plata, Río Uruguay and affluents; Uruguay, Argentina and southern Brazil.
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