The closed circulating water is used as the breeding facility for the production of parent fish culture pond, which is a cement pond with an area of 20 square meters and a depth of 12 meters. The water source is hot spring water, which meets the standard of breeding water, with relatively constant water temperature and clear water without pollution.
Brief introduction of Flamingo
Flamingo, tropical fish, fish scientific name: cichlasomatacitrinellum, also known as shouxingtou, shouxingyu, is native to Nicaragua, Costa Rica and other places in Central America. It belongs to cichlid, which is 20-30cm long and similar to goldfish. The head is big. There is a round sarcoma on the top of the head. It's different. The body color is pink, the body color of young fish is gray and black, the adult fish becomes red, the body color is changeable, sometimes the body color is orange or yellow. The feeding water temperature is 22-28 ℃, and the bait includes fish and worms, water earthworms, small live fish, etc. The reproduction water temperature is 27-29 ℃, the water quality is weak acid soft water, the parent fish is mature for 6-8 months, the sarcoma on the head of the male fish is large, the body color is bright red like fire, the body color of the female fish is light, each spawning 200-500, with smooth rock or marble board as the nest.
Culture environment of Flamingo
Cichlasomatacitrinellun, also known as longevity fish, auspicious fish and longevity head, belongs to Cichlidae, which is native to South America and Central America. It is a tropical fish that integrates viewing and eating. The adult of Flamingo is generally 20cm-25cm in length, strong in physique and changeable in body color, generally orange red, white and orange; the water temperature suitable for living is 23 ℃ - 28 ℃, rough in temperament and strong in territory consciousness. Sometimes two fish can bite each other, causing both sides to lose, so Flamingo should not be mixed with small fish; Flamingo feeds on fish worms, water earthworm, small live fish, shrimp, etc After artificial domestication, it can feed on artificial compound pellet feed.
1. Closed circulating water is used as the breeding facility for the production of parent fish culture pool, which is a cement pool with an area of 20 square meters and a water depth of 1.2m. The water source is hot spring water. The water quality meets the breeding water standard, the water temperature is relatively constant, and the water quality is clear and pollution-free. Before releasing the Flamingo, the cultivation pool should be disinfected with 0.5-times; 10e-6 chlorine dioxide solution, and then add new water.
2. When selecting and breeding a parent fish, the male is generally required to have a raised forehead and bright body color, the tips of the dorsal and gluteal fins are long, the abdomen of the female is enlarged, and the ends of the dorsal and gluteal fins are round. A cement pond with an area of 20 square meters generally raises 10-15 pairs of flamingo fish, with a male to female ratio of 1:1. Before stocking, the fish body was disinfected with povidone iodine solution with concentration of 20-times; 10e-6 for 20 to 30 minutes. When the parent fish is cultivated, it is generally fed twice a day. The feed is fresh small fish or compound feed. The feed is required to be fresh, mildew free and not deteriorated, and the nutrient composition can meet its development needs. Vitamin E can also be added to promote the development and maturity of gonad. Regularly drain and add 20cm ~ 30cm fresh water every day to create a good living environment for the fish.
3. After 8 to 10 months of breeding, the gonad of Flamingo is mature and can be propagated. When two adult fish are found in a corner alone and other fish try to get close to each other, the two fish show a strong sense of domain, and will bite other fish, indicating that the two fish have germinated love; or it is found that the male reproductive process is obviously drooping, slightly slender, while the female's abdomen is expanded, the spawning tube is thick and short, obviously protruding from the body, at this time, it is necessary to take out the two female and male parent fish in time and put them in the spawning pool Or in the spawning tank, and put a marble or a flowerpot at the bottom of the pool or tank as the ovaries. The spawning pool, spawning tank and nest shall be soaked with potassium permanganate solution with concentration of 20-times; 10e-6 for 30 minutes before use, and then washed clean for use. The breeding water temperature is controlled at 27 ℃ ~ 28 ℃. When the female and male parents are familiar with the surrounding environment, they will peck the spawning board with their mouths in turn. After cleaning, the time will be ripe. The female fish will lay eggs next to the spawning board, and the male fish will release semen to fertilize and circle after circle. This process is commonly known as "walking board". Generally, after 40 to 60 minutes, spawning is near the end. The female lays 800-1000 eggs each time. In this process, the parent fish will constantly devour the fallen and white eggs with its mouth. Therefore, the spawning board or parent fish should be fished out in time after the spawning. It should be noted that the water quality requirements for hatching and fertilizing eggs are the same as those for spawning pools, so as not to affect the hatching rate. During incubation, pay close attention to the change of water temperature, absolutely avoid the sudden rise and fall of water temperature, and control the content of dissolved oxygen at 5mg / L ~ 6mg / L. After 48-72 hours of hatching, the larvae broke the membrane and gradually fell off the spawning board and landed at the bottom of the tank or pool. The newly hatched larvae take yolk sac. In the first two to three days, the larvae live by absorbing their own yolk sac. Finally, they float up and swim to the water surface. When the larvae swim to the water, the yolk sac is basically absorbed. At this time, feed the opening bait in time, such as the egg yolk water flea, which is the common name of several zooplankton protozoa, to ensure that the larvae can take enough and palatable bait to survive. After another 7-10 days, the rotifers, Cladocera and copepods can be fed. At this time, according to the stocking density and water quality, the stocking density should be reduced in time to carry out sub stocking, and at the same time, the water volume should be increased to absorb pollutants in time to keep the water fresh.