This fish has a face that is half white and half yellow; it also has a thin moustache and a colorful masking across the eyes. Another distinguishing feature is a large black circular area on the belly area.This species is highly aggressive and will readily eat smaller fish. It should only be kept with other aggressive fish. At maturity this fish can measure 9".They are found both in seaward and lagoon reef areas, where they feed on tunicates, mollusks, crustaceans, corals, fish, and sea urchins. As with all trigger fish, they are not reef safe. This is because they are destructive toward other fish and invertebrates in their aquariums.. Bursa Triggerfish are considered to be fairly hardy. They have strong teeth and jaws and may chew through items in their aquariums. Often trigger fish will rearrange objects in the aquarium.Photo by Saltwaterfish.com member, Aaron Blender.