What is the information about the clown fish?

Clown fish is a kind of tropical saltwater fish, commonly known as sea anemone of the family Sparidae, also known as sea anemone, because there are one or two white stripes on the face like clowns in Beijing Opera. There are 28 known species, one from the genus Sparus, the rest from the genus Sawfish and sea anemones have an inseparable symbiotic relationship, and are now mostly cultured as ornamental fish. Native to warmer waters of the Indian Ocean and Pacific Ocean, including the Great Barrier Reef and the Red Sea. Although the distribution of most species has its limitations, some of them are widely distributed.

The maximum body length of the clown fish is 11 cm, the total number of dorsal spines is 10: 12, the total number of dorsal soft strips is 4: 16, the total number of gluteal spines is 2, the total number of gluteal fins is 14: 15, all juveniles are black with scales concentrated blue, white patches on the forehead and upper side, all fins are black except the outer part of the pectoral and soft dorsal fins.

Each population of clown fish has a dominant female and several adult males, who are hermaphroditic in adolescence. If the dominant female dies, one of the adult males will undergo hormonal changes and become the new female in the population. During the spawning period, male and female fish have the domain behavior of protecting nests and eggs. The eggs hatch for about a week, and the young fish float in the water layer for a period of time before they inhabit symbiotic organisms such as sea anemones.

The clown fish has special mucus on its body surface, which can protect it from the influence of sea anemones and live safely and freely. Because of the protection of the sea anemone, the clown fish can be protected from other big fish. At the same time, the leftover food of the sea anemone can also be supplied to the clown fish, and the clown fish can also use the tentacles of the sea anemone to build nests and lay eggs.

Clown fish are very domain-minded, usually a pair of male and female fish will occupy a sea anemone, prevent others from entering, if it is a large anemone will also allow some other young fish to join in. In such a large family, the strongest is the female, she and her mate, the male, dominate, and the other members are males and young fish that have not yet shown their characteristics.