Mosquito fish
It is relatively easy to distinguish the males and females of mosquito fish Yes, the anal fin of the male mosquitofish has evolved into a tail joint, and the male fish is smaller than the female fish, and his face is more beautiful than the female fish. Mosquito fish are not large in size, and their shape is quite unique.
Mosquitofish is a species of mosquitofish belonging to the suborder Medakaformes and the family Medakaidae. The body is elongated, slightly flattened laterally, only 15.5 to 37.5 mm long. The male fish is slightly slender; the ventral edge of the female fish is rounded and convex. The head is broad and short, with a flat front. Kiss short. The eyes are large and the distance between them is wide and even. The mouth is small, located upward, and the cleft is horizontal and straight. The teeth are small. The head and body are rounded. No side lines. The third to fifth rays of the anal fin of the male fish extend and transform into a spermatozoa. Caudal fin rounded. Native to the southeastern United States, Mexico and Cuba, it has been colonized by some countries because it has a certain effect on killing the larvae of malaria mosquitoes and other mosquitoes. Introduced to China in 1935. It is a small freshwater fish. It likes to live in the upper layers of slow still water or flowing water bodies. Often female fish are larger than male fish. Ovoviviparous. The larvae can swim vigorously after they are born, and their body length is about 5 mm. The larvae feed on rotifers. Adult fish become natural enemies of mosquitoes by devouring larvae. It is also used as ginseng fish and has no edible value. Small fish. Lives in ponds, rice fields or the upper layers of slow-flowing water bodies. The maximum body length is 50mm. Ovoviviparous, the larvae can swim freely after leaving the mother's body. It has no edible value and has strong ability to eat larvae. It can be used to kill mosquitoes. It is native to North America and was introduced to China in the 1930s. Now scattered in various water bodies in the south.
Mosquito fish look like wickers, so they are also called wicker fish. It has a wide and long tail peduncle, flat body sides, 2.5 to 5 cm long, a wide head, a pointed snout, large eyes, and small, unnecessary teeth. Male fish are brightly colored. Mosquitofish are small warm-water fishes native to North America. They were introduced to China from the Philippines in 1924 and were bred in West Lake in Hangzhou, and later introduced to Guangdong. Mosquito-eating fish is very popular among people because of its obvious effectiveness in killing mosquitoes.
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