The Rhino Blenny needs a tank of at least 30 gallons with plenty of sandy subsrtate and scattered rocks for hiding. The Rhino Blenny is a peaceful tank member, they get a long with all fish! They are also considered not reef safe for they will eat fleshy corals. They should be fed frozen or live brine shrimp and other frozen foods. We typically find the Rhino Blenny is more common in the colder months.