Triggerfish Triggerfish (family Balistidae) are large reef fish with oval bodies. They are common on Thai reefs and have a reputation for being aggressive. This reputation comes from the territorial nature of the male Titan triggerfish who guard their nesting grounds from reef level up to the surface and will charge scuba divers and snorkelers who they feel threatened by. Triggerfish have sizable teeth and can easily drawn blood. You can Read More …