The Ocellaris Clownfish (Amphiprion ocellaris), also known as the False Percula Clownfish or Common Clownfish, is a marine fish belonging to the family Pomacentridae, which includes clownfishes and damselfishes. Amphiprion ocellaris are found in different colours, depending on where they are located. For example, black Amphiprion ocellaris with white bands can be found near northern Australia, Southeast Asia, and Japan. Orange or red-brown Amphiprion ocellaris also exist with three similar white bands on the body and head. Amphiprion ocellaris can be distinguished from other species based on the number of pectoral rays and dorsal spines. Amphiprion ocellaris are known to grow about 110 mm long. Like many other fish species, females are, however, larger than males. The life cycle of Amphiprion ocellaris varies in whether they reside at the surface or bottom of the ocean. When they initially hatch, they reside near the surface. However, when Amphiprion ocellaris enter into the juvenile stage of life, they travel down to the bottom to find shelter in a host anemone. Once they find their anemone, they form a symbiotic relationship with them.
This species is found in the Eastern Indian Ocean and in the western Pacific Ocean. As mentioned earlier, they can also be found in Northern Australia, Southeast Asia and Japan.
Amphiprion ocellaris typically lives in small groups on outer reef slopes or in sheltered lagoons at a maximal depth of 15 meters.
The Common Clownfish is a small fish that grows up to 11 cm (4.3 inches). Its body has a stocky appearance and oval shape. It is compressed laterally, with a round profile. The colouration of its body is orange to reddish-brown, but it can also be black in some particular areas such as the Northern Territory in Australia. It has three vertical white stripes outlined with a fine black line. The first pass just behind the eye, the second in the middle of the body widens forward to the head centrally and the third one circles the caudal peduncle. All the fins are also outlined with a fine black line. Amphiprion ocellaris is often confused with Amphiprion percula, which possesses exactly the same colours and patterns at first sight but distinguishes itself by the thickness of the black outlines. Additionally, Amphiprion ocellaris has a taller dorsal fin and typically possesses 11 dorsal-fin spines vs. 10 spines in Amphiprion percula.
Amphiprion ocellaris – diurnal fish. It is a protandrous hermaphrodite, which means the male can change its sex 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.