They are often found in large schools. The schooling behavior of grunts can be interesting in a large aquarium. Ocellaris Clownfish Clownfish are well known aquarium fish. They have a unique relationship with anemones. Clownfish can safely live in the tentacles of anemones without being eaten.
Anemones also benefit from the relationship.
Soldierfish Found around reefs and in deep waters. They feed mostly at night, but can often be seen during the day in caves and other dark areas. Threadfin Butterflyfish Live on or near coral reefs in most all tropical seas. Many feed on coral polyps or algae. Butterflyfish are semi-aggressive, but can be kept with others of the same type in a large environment.