The two-lined monocle bream is widespread in the coral reefs of the Indo-Pacific region. Adults often live in pairs and primarily hunt at night. Juveniles mimic the striped poison-fang blenny and adopt similar behavior to evade predators.

By day, these fish form a small group and remain free from branched corals. At night, the group dislocates and specimens go down near the bottom for food. During the incubation period, the eggs are kept in the mouth of the male. The latter fasts until they hatch.

The moon wrasse inhabits the coral reefs of the Indo-Pacific. This species is sometimes referred to as the moon wrasse due to the shape and yellow color of their caudal fin. This wrasse primarily feeds on small invertebrates residing in the rocks and fish eggs.

The twotone tang, like its counterparts, possesses scalpels at the base of the caudal fin. In times of danger, it can extend two small blades for protection against predators. Adults of these fish typically live in groups of around twenty individuals. They gather in large schools to spawn during the breeding season. They are exclusively herbivorous and graze on algae in coral-rich areas.