Attonitus is a genus of freshwater ray-finned fishes, characins, belonging to the family Stevardiidae. The fishes in this genus are endemic to Peru.
Species Attonitus contains the following valid species: Attonitus bounites Vari & H. Ortega, 2000 Attonitus ephimeros Vari & H. Ortega, 2000 Attonitus irisae Vari & H. Ortega, 2000
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