The thorny fish are mainly distributed in the south of our country and are one of the most valuable economic fish. Thorn fish and fish are tender, rich in nutrients, and have a wide range of food habits. The market prospects are broad. The polyculture of ponds in the same year can reach the market specification of 0.5 kg in 8 months, and the largest individuals in pond culture can reach more than 5 kg. The current adult fish are mainly fished. The market price of artificially grown adult fish is generally 15 to 20 yuan/kg, and that of Fujian and Guangdong is 60 to 80 yuan/kg, which is 5 to 20 times that of grass carp. Higher economic value is a breed that has good development prospects. Due to the destruction of the ecological environment in recent years and overfishing and other unhealthy fisheries activities, the amount of thorny fish and catfish resources has dropped drastically, and artificial reproduction has become an urgent matter.
First, the life habits of thorny fishes and thighs are middle and lower layer omnivorous fishes, which are slightly animalistic. Whether plant, animal food or plankton, organic debris can be eaten. Because it enjoys living in the lower middle class, the remaining bait resources can be fully utilized in the polyculture. Since it is domesticated from wild fish, it has a wide adaptability, particularly low disease, and strong disease resistance. Whether it is reservoirs, ponds, mountain streams, cages can be kept, but in the breeding and fishing, it should pay attention to its characteristics of urgency, easy to jump.
Second, the pond conditions Pond area of ​​100 square meters, irrigation and drainage freely, the pool depth of 1.5 meters, the bottom of the pool is about 10 cm thick gravel layer, a small amount of water hyacinth in the pool. Maintain fresh water, no pollution, pH 7-8, dissolved oxygen 8.0 mg/L, transparency 70 cm, total hardness 8.25 degrees, ammonia nitrogen ≤ 0.2 mg/L.
Third, the thorn fish into the fish to obtain natural waters, disease-free without injury, physical fitness, individual specifications of 1200 grams. The average size of the product is 0.67 kg. It is routinely disinfected with malachite green before entering the pool, and is reared by size.
Fourth, the bait feed early pupa and self-provided powdered material, powdered material crude protein content was 41%, in the middle and late expansion materials and crushed snail and quail meat, expansive material crude protein content was 48%. According to field anatomy, most of the foods in the intestines are snails. Therefore, when formulating a feeding plan, they can be fed in the quail acclimation period, and after 2 weeks, they are fed with crushed snails and powdered feed. , supplemented by a certain amount of green material. Under normal conditions, the feed rate for water temperature 17°C-20°C is 1.5%-2.0%, and the water rate for 21°C-25°C is 2.5%-3.0% of the fish's body weight. The water temperature is 26°C-29°C. Bait is 3.0%-3.2% of fish's body weight. The hawksbills and lions were placed in a bait station about 10 cm away from the water surface, while the powdered materials were sprayed at a fixed point. The principle of "four determinants" was used for feeding.
V. Daily management Every morning and evening, flush water once a day to keep the pool water fresh. The quantity of the injection should be determined according to the changes of water color, transparency and water level. Analyze the water quality once a month and grasp the water quality situation in time. The amount of dissolved oxygen in the water is maintained above 5 mg/l. Adhere to many times a day to inspect the pond, observe the food and activities of the fish, every half a month to disinfect and disinfect the whole limestone pool, and regularly feed medicine baits to prevent disease.
First, the life habits of thorny fishes and thighs are middle and lower layer omnivorous fishes, which are slightly animalistic. Whether plant, animal food or plankton, organic debris can be eaten. Because it enjoys living in the lower middle class, the remaining bait resources can be fully utilized in the polyculture. Since it is domesticated from wild fish, it has a wide adaptability, particularly low disease, and strong disease resistance. Whether it is reservoirs, ponds, mountain streams, cages can be kept, but in the breeding and fishing, it should pay attention to its characteristics of urgency, easy to jump.
Second, the pond conditions Pond area of ​​100 square meters, irrigation and drainage freely, the pool depth of 1.5 meters, the bottom of the pool is about 10 cm thick gravel layer, a small amount of water hyacinth in the pool. Maintain fresh water, no pollution, pH 7-8, dissolved oxygen 8.0 mg/L, transparency 70 cm, total hardness 8.25 degrees, ammonia nitrogen ≤ 0.2 mg/L.
Third, the thorn fish into the fish to obtain natural waters, disease-free without injury, physical fitness, individual specifications of 1200 grams. The average size of the product is 0.67 kg. It is routinely disinfected with malachite green before entering the pool, and is reared by size.
Fourth, the bait feed early pupa and self-provided powdered material, powdered material crude protein content was 41%, in the middle and late expansion materials and crushed snail and quail meat, expansive material crude protein content was 48%. According to field anatomy, most of the foods in the intestines are snails. Therefore, when formulating a feeding plan, they can be fed in the quail acclimation period, and after 2 weeks, they are fed with crushed snails and powdered feed. , supplemented by a certain amount of green material. Under normal conditions, the feed rate for water temperature 17°C-20°C is 1.5%-2.0%, and the water rate for 21°C-25°C is 2.5%-3.0% of the fish's body weight. The water temperature is 26°C-29°C. Bait is 3.0%-3.2% of fish's body weight. The hawksbills and lions were placed in a bait station about 10 cm away from the water surface, while the powdered materials were sprayed at a fixed point. The principle of "four determinants" was used for feeding.
V. Daily management Every morning and evening, flush water once a day to keep the pool water fresh. The quantity of the injection should be determined according to the changes of water color, transparency and water level. Analyze the water quality once a month and grasp the water quality situation in time. The amount of dissolved oxygen in the water is maintained above 5 mg/l. Adhere to many times a day to inspect the pond, observe the food and activities of the fish, every half a month to disinfect and disinfect the whole limestone pool, and regularly feed medicine baits to prevent disease.
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