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Plagiotremus rhinorhynchos is a striking species of tropical blenny. Like the rest of the species of the genus, it presents a peculiar behavior consisting of imitating certain species of worming labrids. In this way, it takes advantage of the trust that the "real wormers" generate in the fish that come to be wormed, to feed on pieces of fin, scales and skin of their unsuspecting victims, using the surprise factor and their sharp fangs. The species in question here preferentially mimics Labroides dimidiatus. Unlike other blennid species, they have a great capacity to swim in mid-water over coral reefs, although they come to their refuge very quickly when they feel threatened. They have even been reported to take small bites at divers. The specimen in the image was photographed in the reefs southeast of Bali, at a depth of 22 meters.
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