Tridentopsis is a genus of catfishes (order Siluriformes) of the family Trichomycteridae. It includes three species, T. cahuali, T. pearsoni, and T. tocantinsi. T. cahuali originates from the Paraguay River basin in Argentina. T. pearsoni inhabits the upper Amazon River basin in Bolivia. T. tocantinsi lives in the Tocantins River basin in Brazil. Tridentopsis species grow to about 2.2–2.3 centimetres SL.
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