The Bursa Trigger, Rhinecanthus verrucosus, is also known as the Black Patch Trigger, Blackbelly Trigger, or Bursa Triggerfish, They can make an audible grunting sound, as well as  rearranging the landscape to their liking. They should not be kept with small fish or crustaceans as they will see them as potential food Growing up to 9 inches in length they require at least a 120 gallons aquarium to thrive. Feed them 1-2 times per day a diet of krill, shrimp, squid, and clams to help keep their teeth trimmed.