The Barnacle Blenny's colour is a mottled black, white and red covering the body and fins. The Barnacle Blenny can be differentiated from the Panamic Barnacle Blenny by looking at the dorsal fin which will have pink/red or orange colouration on the first third of its dorsal fin and the base of the dorsal fin will have a black spot or band which is absent in the Panamic Barnacle Blenny.
A well-established 10 gallon or larger aquarium with multiple hiding places and plenty of rock is a suitable environment. The Barnacle Blenny is a very entertaining fish, as they race as fast and furious as they can to snatch food from the water column while trying not to be eaten by the other fish. The body of this fish is seldom seen as they will take up residence in a small crevice in the rocks. They are a very attentive fish constantly watching about the aquarium waiting for a meal to come their way.
The Barnacle Blenny does best in well-established aquariums with large numbers of crevices in the rocks in which it can hide. The diet should include meaty items such as finely chopped crustacean flesh, vitamin enriched frozen brine and mysis shrimp.