Courtship habits of marine fish

The courtship behavior of marine fish is rarely seen, but in the reproductive process of sea dragons (also known as poplar fish) and seahorses, there is a complex set of courtship activities. Before the reproductive behavior begins, the male and female fish each move their heads and shoulders forward and swim vertically. Afterwards, the two parent fish gradually approach. When the two fish are about to come into contact, the male fish bends his body to express courtship and touches the female fish with his snout. The male fish's emotions show strong excitement, his whole body moves in a spiral shape, and he constantly rubs the female fish's abdomen with his snout. After this action was repeated several times, the male and female became more and more excited, and finally embraced each other and became entangled. After that, the male and female parties separate and repeat the above activities after a few minutes.

The rat street fish that lives along the coast also has complex courtship movements. The male and female individuals of this fish are completely different. The male fish is larger, about 25 cm long, yellow or orange in color, with 2 cyan stripes on each side, a row of light cyan or green spots on it, and purple or cyan on the head. Each fin is larger than that of the female fish, especially the first dorsal fin, which is very long and has yellow, green and cyan spots and stripes on it. Mature female fish are smaller, about 20 centimeters long, and are dark yellow-brown in color with dark-brown rings on the sides and green spots inside. Many people mistake male and female fish as two types of fish. When this kind of fish is mating, the male fish swims quickly in a state of extreme excitement in order to scare away other male fish nearby; then, he swims around the female fish and puts all his fins up, indicating that he has very bright colors. . This action finally won the favor of the female fish. When the female fish agrees to the male fish's courtship, the male fish's abdomen is upward, and the pelvic fin is placed under the female fish's pelvic fin. Then the male and female fish swim vertically toward the water surface, and at this time they discharge eggs and sperm at the same time.

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