Dekeyseria picta is a species of freshwater ray-finned fish belonging to the family Loricariidae, the suckermouth armoured catfishes, and the subfamily Hypostominae, the suckermouth catfishes. This catfish is found in the basin of the Rio Negro in Brazil and in the Orinoco basin in Colombia and Venezuela. Here it is found around rocks, rapids and sunken logs. This species reaches a standard length of . This species is found in the aquarium trade, where it is sometimes called the Urubaxi butterfly pleco or flounder pleco and has been identified by the numbers L168 and L052.
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