How to raise edible fish in restaurants? How to raise grass carp in restaurants

First of all, confirm the ** problem of your fish, such as the impact of the fish when fishing, so that the fish will have internal injuries, raise a few days and die, and the fish is electroctuated, so that it will die in a few days, if the problem of the fish is ruled out, your density is too large, you should use a larger fish tank, and there is to increase the amount of oxygen, and at the same time, the dirty things at the bottom of the fish tank should be cleaned up every day. Temperature control 27 degrees.

It is also recommended to buy some fish medicines, such as fish diazepam and the like, similar to anesthetics, which are generally used to transport fresh fish in Japan, to prolong the survival time of fish and be harmless to people.

The main purpose of the restaurant is to do a good job of temporary cultivation, that is to say, from the edible fish to live from the purchase to the sale of the finished food. To do a good job in temporary recuperation, we should pay attention to the following points:

Cooling: Except for a few tropical species such as tilapia and freshwater pomfret, most fish, especially rainbow trout, treasure fish, sturgeon and other famous and excellent species, can withstand low temperatures, reduce temperature, slow down metabolism, reduce excretion to ensure water quality, and at the same time, the proportion of edible fish that die violently due to the stress effect of procurement and transportation is greatly reduced.

Oxygenation: It must be oxygenated, oxygen is the first limiting factor of aquatic organisms, and water with higher dissolved oxygen is conducive to temporary cultivation.

Pay attention to breeding density: we cannot blindly reduce the procurement cost and concentrate on the purchase of live fish, which leads to excessive breeding density in a single breeding unit. For general species, stay in the restaurant for 1 to 3 days, and some species that are easy to breed and valuable are only 1 week at most.

Don't feed it casually. Fish have a strong ability to tolerate hunger, and feeding will speed up the metabolism of the fish, increase the burden on the water body, and destroy the temporary rearing. Feeding should be carried out under the guidance of professional advice.

Is it a problem with the water temperature or the fingerlings themselves?

1；Wash the transparent fish tank (other utensils are fine, but be careful to be transparent) first2; With soda, without soda. Cool boiled water can be used instead. But remember never to use tap water, because there is disinfectant chlorine in the tap water, and baby goldfish can't eat it.

3；Try to have as much water as possible to ensure that the oxygen content is good and the fish are fully free. It's best to buy a small air pump for fish farming.

Tips for feeding.

1；If you don't have the conditions to keep the water temperature in the tank, you should always give the goldfish enough sunlight on this cold winter day.

2；Put some white rice stones and some aquatic plants in the fish tank, but remember that the aquatic plants must be appropriate.

3；In terms of feeding, you can throw some fish insects or white flour steamed buns, but you should feed less and frequently each time.

1. Strengthen water quality management, sprinkle straw slurry and inject new water.

2. Normally open aeration pump to provide oxygen.

Other precautions: The fish tank should be large, if you find the fish belly facing up, immediately take it out, throw some wheat, rice, corn, barley, sorghum and other stems and leaves to judge whether the fish is sick.