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The Highfin Blenny is also known as the Dusky Blenny, Brown Coral Blenny, Black Blenny, Black Sailfin Blenny, or Brown Combtooth Blenny. It can be found in a variety of colors including yellow, orange, brown, or black. Males are generally larger than females and experience a succession of color changes when breeding.

It requires a well-established tank of at least 50 gallons or larger with plenty of scattered rocks for perching and hiding, and live rock with microalgae growth on which to feed. The Highfin may nip at or eat some small-polyped stony corals and clam mantles. Only one Highfin Blenny per tank is recommended unless it is a breeding pair.

The Highfin Blenny is an obligate microalgae eater. Its diet can be supplemented with vegetable matter, including frozen and dried foods containing marine and blue-green algae (Spirulina).