Emblemariopsis occidentalis

Emblemariopsis occidentalis, the flagfin blenny, blackfin blenny or redspine blenny, is a species of chaenopsid blenny found around the Bahamas, Brazil, and the Lesser Antilles, in the western Atlantic ocean. Males of this species can reach a maximum length of 1.9 cm SL, while females can reach a maximum length of 1.7 cm.