The Complete Clownfish Guide: A Comprehensive Look at Clownfish
The clownfish is a tropical saltwater fish, commonly known as the anemonefish, a subfamily of fish in the damselfish family. It gets its name because it has one or two white stripes on its face, resembling the clown role in Peking opera. There are 28 known species, one from the genus Premnas, and the rest from the genus Amphiprion. It has an inseparable symbiotic relationship with sea anemones and is now mostly kept as an ornamental fish. It is native to the warmer waters of the Indian Ocean and Pacific Ocean, including the Great Barrier Reef and the Red Sea. Although the distribution of most species is limited, some are very widely distributed.
The clownfish reaches a maximum body length of 11 cm, with a total of 10 to 12 dorsal spines, a total of 4 to 16 soft dorsal rays, a total of 2 anal spines, and a total of 14 to 15 soft anal rays. Juveniles are entirely black with scales concentrated in blue, with white patches on the forehead and upper sides, and all fins black except for the transparent pectoral fins and the outer parts of the soft dorsal fin rays.
Each clownfish population has one dominant female and several adult males, the latter being hermaphroditic during their youth. If the dominant female dies, one of the adult males will undergo hormonal changes and transform into the new female of the population. During the spawning period, the male and female fish exhibit territorial behavior in guarding the nest and the eggs. The eggs hatch in about a week, and the young fish drift in the water layer for a period before settling on symbiotic organisms such as sea anemones.
The clownfish has a special mucus on its body surface that protects it from the effects of the sea anemone, allowing it to live safely and comfortably among them. Because of the protection of the sea anemone, the clownfish is safe from attacks by other larger fish, and at the same time the food left over by the sea anemone can also be provided to the clownfish, while the clownfish can also use the sea anemone's tentacles to build its nest and spawn in peace.
The clownfish is highly territorial. Usually a pair of male and female fish will occupy one sea anemone and prevent other members of the same species from entering. If it is a large sea anemone, it will also allow some other young fish to join in. In such a large family, the physically strongest is the female fish, who with her male mate occupies the dominant position, while the other members are all male fish and young fish that have not yet shown their characteristics.