Titan triggerfish
Titan triggerfish Titan triggerfish ( Balistoides viridescens ) is a large triggerfish species found in lagoons and reefs at depths of 50 m in most of the Indo-Pacific, although it is not found in Hawaii. It is the largest trigger-fish species in its range with a length of up to 75 centimetres. Titan triggerfish is solitary and diurnal. It feeds on sea urchins, molluscs, crustaceans, coral and tubular worms. Here is a piece of advice. They can be quite aggressive so if you are a beginner diver please don't swim towards them.