Haptoclinus dropi, the Four-fin blenny, is a species of labrisomid blenny only known to occur off of Curaçao in the Caribbean where it was collected from a deep-sea reef at a depth between . The only specimen collected, a female, measured SL.
Etymology The species is named after the Smithsonian Institution's Deep Reef Observation Project (DROP), under which program this species was discovered. The proposed common name, "Four-fin blenny", is based on the species' dorsal fin configuration.Baldwin, C.C. & Robertson, D.R. (2013): A new Haptoclinus blenny (Teleostei, Labrisomidae) from deep reefs off Curaçao, southern Caribbean, with comments on relationships of the genus. ZooKeys, 306: 71–81.
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