Parastremma is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. The fishes in this genus are endemic to western Colombia.
Species Paratremma contains the following valid species: Parastremma album Dahl, 1960 Parastremma pulchrum Dahl, 1960 Parastremma sadina C. H. Eigenmann, 1912
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