2. Stocking density: per mu150 ~ 250kg (100 ~150 group) is appropriate. The stocking density of parent fish varies with water quality, and too high density affects gonad development.
3. Feed and daily management: the feed is mainly peanut cake and bean cake, supplemented by fish meal, silkworm chrysalis, fly maggots, fresh fish or abandoned animals. In the first month of the growing season, animal feed should be given priority to promote gonadal development. The daily feeding amount is 10% ~ 15% of the body weight, and it is fed twice in the morning and afternoon. Fresh water/kloc-0 should be injected twice a week for 2 ~ 3 hours each time.
5. Overwintering of parent fish: Silurus aegypti is a tropical fish, and its tolerance to low temperature is higher than that of tilapia. The water temperature dropped to 10 ~ 15℃ and wintered. Using underground hot water, hot spring water, air raid shelter, underground greenhouse of civil buildings or surplus hot water from factories can be used for safe wintering.
Extended data
Feeding habits of Egyptian pond fish: Silurus aegypti with long beard is an omnivorous fish, which mainly feeds on animal food. Greedy, eating both plant feed and animal feed, and growing fast, eating animal feed as fast.
In natural waters, they mainly feed on small fish, shrimp, aquatic insects, earthworms and benthos. Artificial culture can feed wild fish, silkworm chrysalis, fly maggots, mussel meat, slaughterhouse waste and so on. Or artificial compound feed, such as wheat bran, flour, bean cake, etc. Or these feeds can be made into expanded granular feed with better effect.
Baidu encyclopedia-Egyptian catfish