Great Barrier Reef - List of fishes

The blue shark, also known as the "blue skin shark," is a pelagic predator found in temperate and tropical marine waters, with occasional sightings near the coast. Its wide distribution, however, is threatened by overfishing. Recognizable by its blue back and white belly, this sleek-bodied shark mainly feeds on small fish, mollusks, cephalopods, and sometimes birds.

The peach fairy basslet is found from the Red Sea to the Great Barrier Reef. Juveniles hide under reef overhangs or in holes in outer lagoons, while adults prefer caves in coral-rich areas. These fish feed on sponges and form pairs for reproduction.

Pseudobalistes flavimarginatus, better known as the "yellowmargin triggerfish" due to the coloration of its body, is a fish belonging to the balistidae family. It is found in tropical waters of the Indo-Pacific. It can be encountered on reefs and estuaries, but can also be observed on slopes and in lagoons.

This dartfish is easily recognizable by its two-tone blue and black body. Like its counterparts, adults live in pairs in burrows they dig in the substrate.

The dark-banded fusilier is recognizable by its vibrant colors, with a pale pink to red underside and a green-blue upper part. This diurnal fish forms large schools in the coral reefs of the Indo-Pacific Ocean. Its primary diet consists mainly of plankton.