The main feature of red swordfish pregnancy is that the female fish has obvious black fetal point in the anus, as shown in the figure, the female fish to be born can be caught in the culture pond, and the culture method of red swordfish is similar to that of guppies. Because of its large size, red flag fish usually give birth every 30~50 days. The larger male swordfish can give birth to more than 200 larvae per fetus, and the newborn swordfish larvae are hidden in the leaves of aquatic plants. When the red swordfish larvae grow to 3 months, the swordfish tail at the lower edge of the male swordfish tail fin begins to develop.

Adult fish can reproduce in about 7 months. The male fish is slender, the tail fin forms a rod-shaped genitalia, and there is a sword connector at the top; The female fish is short and fat with fan-shaped anal fins. Living in groups, when the breeding water temperature is 20~28 degrees, several male fish chase the female fish, and the female fish eggs are fertilized in the body.

Xiphophorus hellerii.var, also known as Red Sword and Swordfish, belongs to Cephalopoda (Cyprinidae) and Cyprinidae suborder, belonging to cultured freshwater ornamental fish, and is loved by people because of its red color.

Red flag fish has a mild temperament and can interbreed with other tropical fish of similar size. Some fish are aggressive to small tropical fish and like to peck their tails. Usually lively and active, male fish like to jump when they are frightened, when there is a big airflow and when they fight. Shuttling back and forth between female fish in estrus, intercepting female fish's courtship.

Swordfish is a beautiful ornamental fish. Origin in South America. In the country of origin, this kind of fish can generally grow to 7-8CM. Under the condition of artificial feeding, the body size is large, generally around 12CM. Swordfish is strong, easy to breed and not picky about food. Omnivorous, earthworms, red worms and artificial feed can all be fed. Generally speaking, water quality can adapt to weak acidity or weak alkalinity.

Because swordfish is a variety of artificial multi-belt culture, its adaptability is stronger than that of wild swordfish. Generally speaking, the suitable water temperature is 23-28℃, but it can still survive at the temperature of 18℃ or even lower. In terms of hardness, the living environment of wild swordfish is hard, while swordfish can adapt to soft water below dH8.

reference data

Baidu encyclopedia-hongqi fish