Heterocharax is a genus of freshwater ray-finned fishes belonging to the family Acestrorhynchidae, the biting tetras and freshwater barracudas. The species in this genus are found in South America.
Species Heterocharax contains the following species: Heterocharax leptogrammus Toledo-Piza, 2000 Heterocharax macrolepis C. H. Eigenmann, 1912 Heterocharax virgulatus Toledo-Piza, 2000
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