Hawkfish have an amazing personality which make these fish so popular in an aquariums. They do not grow large and just hang around and perch themselves on different ledges in the aquarium. They will eat shrimp and small fish which is the downside to these fish. They can live with a shrimp but when the day comes he will fit in their mouth, he will become a meal. They can also jump when startled so a tight sealed lid on the aquarium is needed.