1. Check the length of eating time
Normal: Fish feed is normal within 3 hours after feeding, but if it encounters fierce tilapia and grass carp, it takes only 10 minutes to feed it. It should be 80% of the fish do not grab food. can.
Unsatisfied: After 2 hours of feeding, the fish eats the bait and indicates that the amount of feed is insufficient. If the fish eat the feed, they still swim in the water near the surface of the food field and refuse to disperse. This phenomenon also indicates that the fish are still not fully fed and should be properly increased at the time of the next feeding.
Overfeeding: If the fish has not finished eating 4 hours after feeding, and the fish have left the food market, indicating that the feeding is excessive, the amount of the next feeding can be reduced.
2. Inspect the growth of fish
The food intake of fish increases day by day. In the feeding plan of the week or the tenth day, the changes in the beginning of the week and the weekend and the beginning and end of the ten days are to be observed. If it is found that the growth of the fish does not reach the predetermined specifications, and the individual size difference is very different, this indicates that the fish are often in a state of starvation; in ponds dominated by salmon and squid, the heads of the fish are found to be large and small, with narrow backs and swimming. Weaknesses also indicate that fish are often hungry.
3. Check the water situation
Water under starvation: After feeding, if the fish is not sick, but finds that the water surface is extremely calm, the fish frequently moves on the surface of the water, and there is no large number of parasites on the fish body. This is a manifestation of hunger.
The water surface under severe hunger: After full-fed fish are generally drilled underwater. For example, the fish fry and fish species in the fish ponds are flocking together and swimming around the pool week. This indicates that the fish are in a state of severe hunger. They should be fed immediately and block wild swims. Otherwise, the fish will die in large numbers.
4. Changes in the water color of the lake: If the pond is mainly bred with salmon, if it is found that the entire pool of water is muddy yellow (non-storm or flooding), it can be determined that the catfish are in a state of starvation.
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