Australian Shell Fish Culture Technology

Australian shellfish are native to Australia and have a scientific name of "splined tip". Their external appearance is similar to that of Thai bamboo shellfish. Their appearance is beautiful, but their color is darker and individuals can grow to more than 1 kg/tail. The fish is delicate, has few spurs, is delicious and nutritious, and is a very expensive food fish among freshwater fish. First, the biological characteristics of Australian shellfish fish living temperature of 9-36 °C, the normal feeding temperature of 18-32 °C, when the water temperature dropped to 9 °C will be affected. The range of pH adaptation is 6.8-8.6. It can adapt to the low-salinity brackish water culture below 12 inches, and it is more tolerant to hypoxia. Generally, it will not cause death due to lack of oxygen in the pond. Living in the middle layer of the water, it is a carnivorous fish. In the case of feed satisfaction, they generally do not eat each other, but the size of the fry is not too different. The fish has a mild temperament and does not love to walk around. Most fish are at close range. The range of feeding, so it is also suitable for environmental cultivation of small water bodies. Australian shell fish is resistant to disease, easy to maintain, easy to catch, easy to transport. Second, farming methods and conditions There are two types of shellfish culture in Australia: one is pond culture, and the other is flow-type factory culture. Pond aquaculture can be divided into two stages: the first stage is the pre-culture, and the second stage is the adult culture. In the first stage, the aquaculture pond area is generally about 3 mu, and the pond surface is the best rectangle, so that it is easier to cover the greenhouse when it is used as a wintering shed, and the water depth is more than 1.5 meters. The second stage of cultivation is the adult fish breeding stage. The pond area should be larger than 4-6 mu. The pond surface has the best square and the water depth is more than 1.8 meters. Especially in the high temperature season, the deeper the water, the better. At the stage of adult fish breeding, it is necessary to have irrigation and drainage conditions, drainage and irrigation water conditions are good, and the culture density can be increased. Australian shellfish are produced by running aquaculture. It is best to start at the stage of adult fish breeding. That is to say, the fry is bred in the pond. The size of 10-15 cm and then transferred to the factory aquaculture is more suitable for breeding. The breeding equipment can imitate the dental caries. The industrialized culture mode of fish is used for aquaculture production. According to the results of industrialized aquaculture provided by the Australian side, 100-200 kilograms of adult fish can be produced per cubic meter of water body, with a tail weight of 400-500 grams. This is a very prominent one. The results of our production, we are exploring ways to carry out factory farming. Adult fish breeding can be produced in reservoirs and cages in lakes. It is better to use mountain streams and hot springs in places where conditions permit. Third, the pond culture method in the fry 15 cm below the specifications of the previous culture, fish breeding ponds 15 days before the breeding, ponds to raise water, foster good plankton, so that after the fish ponds have enough biological feed, this can obviously To improve the survival rate of fry, the fourth and fifth days after the fishes began to spill some of the more dilute fish paste around the pond, and began to adopt the habit of eating food, and at the same time, they could continue to cultivate plankton and ensure that there is a good fish under the pond. The growth environment. According to the fish's activity characteristics, it is best to place a certain number of bamboo pockets around the pond. The bamboo pockets are suspended around the pond with a string and a bamboo rod, and are suspended one at a time every 2-3 meters. Every morning and evening, two meals are served in the bamboo pocket. In addition, some fish paste or eel feeding is used to feed the fish, so that the fish can use the bamboo dwelling to inhabit bamboo sticks. This method is very good. In this method, the survival rate can reach more than 80%, and the fry can grow at a high speed. Faster, even and tidy. In the early stage of aquaculture, the density of about 4000 rearing stocks per acre was generally adopted, and when the fish fry were grown to 15-20 minutes, the ponds were cultured according to the size. In the adult fish breeding stage, the stocking density is 2000-3000 tails/mu. Feeding method is to feed the bait around the pond, or set the food table in the pond, manually feed the lure fish to catch the food, and the adult fish pond should have Irrigation facilities to keep the water cool, and then after 8 months of breeding ponds, tail weight can reach 400-600 grams. Fourth, against enemy harm and disease 1, in the early breeding must clear the pond, remove all the fish and shrimp in the pond, at the same time to prevent water snakes, frogs into the pond, to prevent the blue-billed birds in the pond to catch fry. 2, Australian shell fish disease resistance, rarely get sick, disease prevention is the main precautions in the seedling period of the breeding process to prevent bacterial skin infections, once found, available "Bromochlorin" disinfectant disinfectant, Quantang Scatter two or three times.

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