The ocellaris clownfish, also known as the False Percula Clownfish, are found in different colors, depending on where they are located. For example, black clownfish with white bands can be found near northern Australia, Southeast Asia, and Japan. The clown fish can be distinguished from other Amphriphon fish based on the number of pectoral rays and dorsal spines. They are known to grow about 110 mm long. Like many other fish species, females are, however, larger than males.

When they are recently hatched, they stay near the surface; but when they age, they travel down to the bottom to find shelter from a host anemone. Once they find their anemone, they form a symbiotic relationship with them (meaning they live off of one-another). These fish typically live in small groups on outer reef slopes or in sheltered lagoons at a maximal depth of 15 meters. The Clownfish is aggressively territorial and is completely dependent on its sea anemone. It is postulated that the fanning behavior of the fish and removal of parasites promotes the health of sea anemones. In addition, the anemone provides protection for the fish with its tentacles, however, the fish’s mucus protection prevents it from being stung by the tentacles.

The common clownfish is a small fish which grows up to 11 cm (4.3 inches). Its body has a stocky appearance and oval shape. It has three vertical white stripes outlined with a fine black line, while the rest of the body is an appealing orange-brown color. All the fins are also outlined with a fine black line. This species is found in the Eastern Indian Ocean and in the western Pacific Ocean.

The “Nemo Fish” is a protandrous hermaphrodite, which means the male can change its gender to female during its life, and lives in a harem in which an established dominance hierarchy manages the group and keeps individuals at a specific social rank.