Triggerfishes are about 40 species of often brightly colored fishes of the family Balistidae. The largest member of the family, the stone triggerfish (Pseudobalistes naufragium) reaches 1 metre (3.3 ft), but most species have a maximum length between 20 and 50 centimetres (7.9 and 19.7 in). On Koh Tao you can see a lot of Titan triggerfish (up to 50 cm.).