Detailed Explanation of High-Density Culture Techniques for Chinese False Gudgeon

AbstractSelect high-quality, disease-free Chinese false gudgeon varieties for culture. Before stocking, spray quicklime into the pond for disinfection. The number of fry stocked is about 80,000-100,000. During the culture process, oil bran or homemade formula feed can be given, generally fed 2 times a day. When the water quality becomes fertile, change the water in time, spread microbial preparations every half month, and regularly use strong chlorine essence, chlorine dioxide, abamectin and other agents to prevent and control diseases.

I. Selecting Varieties

Chinese false gudgeon can be selected for culture according to foreign grading standards. The special grade has unique characteristics, such as text-like spots, star-spot features, brilliant features, peculiar color patterns, etc.

Grade A (first grade) has variegated markings arranged and extending to the middle near the head, the body surface below and behind the gills is red, there are many distributed flashing star spots, and the markings are clear.

Grade B (second grade) is bounded by the middle of the body, and the variegated markings at the tail do not extend beyond the middle, but the body surface color is bright, and a small number of flashing star spots are distributed on the scales.

Grade C (third grade) has a darker body color, 1-2 variegated markings, and a relatively long body shape.

II. Fry Stocking

1. 7-10 days before fry stocking, spray quicklime into the pond for thorough disinfection, then spread biological fertilizer to cultivate rotifers. During the culture of Chinese false gudgeon, the water transparency in the pond should be maintained at 20-25cm, and about 80,000-100,000 fry are stocked per mu of pond.

2. After stocking, feed oil bran. During this period, feeding can be carried out according to the season and temperature, as well as the growth of the fry. Usually, feeding 1-3 times a day is sufficient. After about 3-5 months of feeding, they can grow to commercial size, averaging 120-160 fish per kilogram.

III. Feeding Feed

Chinese false gudgeon is an omnivorous fish that likes to eat zooplankton. During the culture period, oil bran or self-made compound feed can be given. The feed formula is 12% cornmeal, 21% rapeseed meal, 29% wheat flour, and 38% fishmeal. Under normal circumstances, feeding 2 times a day is usually sufficient, and the feeding amount is about 5% of the body weight of the Chinese false gudgeon in the pond.

IV. Water Quality Management

1. In the early stage of fry growth, maintain a relatively low water level, usually 50-80cm. As the Chinese false gudgeon gradually grows and the water temperature continues to rise, the water level will increase. Usually, add water once about every 7 days, about 20cm each time.

2. When the water quality in the pond becomes fertile, regulate the water quality by appropriately adding water and fertilizing, and if necessary, allow continuous circulating micro-flow water. Usually, change the water once about every 5 days, each time changing 1/5 of the pond water body, and spread a microbial preparation once every 10-15 days, which is beneficial to the robust growth of Chinese false gudgeon.

V. Disease Prevention and Control

To avoid the occurrence of bacterial diseases, during the culture process, regularly use strong chlorine essence, chlorine dioxide, abamectin, or deltamethrin and other bactericidal and insecticidal drugs for whole-pond splashing. Disease prevention and control must strictly follow the "Guidelines for the Use of Fishery Drugs," and prohibited drugs must not be used for prevention and control.