The method of domesticating fish quickly on the bait table
In recent years, with the continuous improvement of @ # @ 233 fish breeding technology, the method of raising fish with full-price pellet bait has been gradually popularized and applied. However, because many fish farmers are unable to feed and domesticate, the domesticated fish can not get on the bait table for a long time, which not only affects the feeding, delays the growth, but also increases the labor cost and affects the breeding benefit. The two simple and easy domestication methods summarized in our production practice are introduced as follows.
1. Bait hanging bag domestication method
Can use big-eye window screen (whichever is not leaking), make a hanging bag that can hold 1.5-1.5 kg bait, put 1.0-1.5 kg full-price pellet bait in the bag, hang it in front of the bait table, make it expand and float, and let the fish peck freely. At the same time, sprinkle a small amount of the same bait slowly near the bag. After regular and fixed-point domestication, the fish can be clustered to the stage for food in about 2-3 days, and the hanging bags can be removed afterwards.
two。 Light trapping and domestication method
Making use of the tendency of fish to light, when domesticating, install a 60-watt or 100-watt incandescent lamp (preferably with a waterproof cover) and hang it at night in front of the bait table at about 0.7 meters from the surface of the water. When fish are found to swim, a few grains of full-price bait are sprinkled into the water to gradually lure them into groups. In this way, every 2-3 times, and then gradually transferred to the day, 2-3 days later, the group can grab food on the stage, and then cancel the lighting.
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Spawning technology of parent fish of cultured turbot
Turbot is found in coastal waters from the Mediterranean to Norway. Turbot is a valuable farmed fish in Europe. Turbot culture has developed continuously in the past 10 years. The production of turbot culture increased from 150t in 1985 to 3700 t in 1998. In the Atlantic coastal waters, turbot reproduces naturally in summer, but it may reproduce all year round by artificially controlling the light cycle and water temperature, or only by controlling the light cycle. Turbot spawned in batches and spawned as many as 10 times during the breeding period. Under the conditions of reception
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Reproduction and breeding of goldfish
Morphological characteristics of goldfish also known as Baiyunshan fish, Tang fish, red tail fish, color goldfish, Cyprinidae is native to Guangdong, China. The goldfish was first found in Baiyun Mountain in the northern suburb of Guangzhou City, Guangdong Province, China, so it is called Baiyun Mountain Fish. The goldfish is about 3-4 cm long and has a spindle-shaped body, slender body, slightly flattened side, small head, large eyes and blunt round kiss. The back of the fish is tea-brown, slightly bluish, the abdomen is silvery white, the dorsal and caudal fins are bright red, the ventral fin tip is yellow, and the middle of the tail is also red. From the kissing end
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