Harttiella parva is a species of freshwater ray-finned fish sbelonging to the family Loricariidae, the suckermouth armored catfishes, and the subfamily Loricariinae, the mailed catfishes. This catfish is known only from a small forest creek in the Atachi Bakka Mountains in French Guiana. This species reaches a standard length of . It was described in 2012 as part of a taxonomic review of members of the loricariid tribe Harttiini native to the Guianas.
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