Experience of pond culture of California perch

California perch, also known as big mouth sea bass, has the characteristics of fast growth, strong adaptability, less disease, easy to catch, delicate meat, delicious taste, no muscle thorns and so on. The culture techniques are as follows.

First, pond conditions. California perch is good at living in the still water environment where the water quality is fresh and not muddy. It is active in the middle and lower water layer and has the habit of occupying the habitat. The suitable growth water temperature is 12-30 ℃. The area of mixed culture pond is generally 3-5 mu. The water depth is more than 1.5 meters, the water source is convenient, and there is a drainage and irrigation system.

Second, mixed culture. The mixed culture of California perch in the pond can control the density of wild mixed fish in the pond and the excessive self-reproduction of tilapia, and avoid the competition for bait, oxygen and space between the wild mixed fish and the main fish, so as to accelerate the growth rate of the main fish and improve the feed utilization rate. increase the overall benefit of the pond. In order to ensure that the farmed species are not preyed on by California perch, when the California perch enters the pond, the specifications of grass, silver carp, bighead carp and other fish in the pond should be more than 200 grams, and crucian carp and tilapia should be more than 10 centimeters. The stocking time is generally better from May to June, with 20-30 perch seedlings of 3-4 cm per mu, depending on the number of bait and pond conditions, but not mixed culture of snakehead, eel, big mouth catfish and other carnivorous fish at the same time.

Third, bait. California perch can make use of natural bait such as small wild mixed fish and aquatic insects that breed naturally in the pond, raising 20 fish per mu, and generally do not need to feed bait fish. However, if the number of wild miscellaneous fish in the pond is poor or large enough to meet their growth needs, a batch of small wild miscellaneous fish can be released to reproduce, so as to ensure that the California perch has sufficient bait fish. Or mix a certain amount of tilapia to produce young larvae for California bass to prey on.

Fourth, pond management. Insist on patrolling the pond once in the morning and evening to avoid excessive turbid or fertile water, and the transparency should be 30-40 cm. New water should be injected regularly, usually once every half a month. Attention should be paid to the prevention and control of fish diseases in the high temperature season. 25 kg of quicklime is applied per mu every half a month from June to September to regulate water quality and kill germs, parasites, bacteria and so on.