A well-established 30-gallon or larger aquarium with multiple hiding places and plenty of live rock is a suitable environment. The live rock provides places to hunt and feed on small crustaceans and algae as well as places to hide. It is not usually aggressive unless the tank mates appear to have a similar shape as it does.
The diet should include meaty items such as finely chopped crustacean flesh, vitamin enriched frozen brine and mysis shrimp. If insufficient algae is present in the aquarium, the diet should be supplemented with a quality dried seaweed.