Also known as Barnacle Blenny, Chaenopsid Blenny, Hancock's Barnacle Blenny, Panamic Barnacle Blenny.
Found in crevices, of dead and live corals, also abandoned clam shells, and worm tubes, (hence the name tube-blennies) over very shallow, exposed, rocky shores, rich in red algae.
They feed on zooplankton.
Length - 4.5cm
Depth - 1-5m
Eastern Central Pacific - Costa Rica, Panama
Often found in the aquarium trade.
Chaenopsid Blennies also called tube blennies because they often make their nests in abandoned worm holes and clams especially at breeding time. These blennies lack scales and have a high front Dorsal Fin
. Ref: https://www.fishbase.se/summary/46714