Cambeva guaraquessaba is a species of freshwater ray-finned fish belonging to the family Trichomycteridae, the pencil and parasitic catfishes. This catfish is presently only known from Rio Bracinho, a small isolated river in Paraná state, Brazil.
This is an elongate catfish up to standard length. It has no unique morphological features and can be distinguished from its congeners by a combination of characters including a uniformly grey colouring with only small dark spots on the flank, pelvic fin not covering the urogenital opening and square-ended caudal fin.
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