A stout blenny with a large mouth and a dark spot behind the eye, resting on rock and rubble.
To about 20 cm. A robust body with a broad head, a blunt snout and a large mouth. There are eight darker bars along the side and numerous small white spots on the lower head and body. Breeding males are dramatic: an orange-red head, body and fins, with blue spots on the head and a blue iris.
At Revillagigedo the fish to check first is the Socorro blenny, which is a Revillagigedo species in the same genus; several other relatives share the wider range. Bar count and the pattern of white spotting are what separate them.
It lives on weed-covered rocky shores in shallow water, between 1 and about 10 m, and eats bottom-living worms, shrimps, crabs and small fish. It is the most common member of its genus at most localities in the Gulf of California.
Ratings are per location: 1 means found on most dives that look for it, 5 means a handful of records. Where enough dives have been logged the figure is calculated from them; otherwise it is an editorial estimate, and says so. We publish habitat and destination, not the dive site.