Generally, there are two reasons why small fish always bite big fish. The first reason is that small fish are too active and may be aggressive themselves, or they will attack other fish when they are in estrus. The second reason is that big fish are sick, often vulnerable to attack after illness, which requires isolation and treatment of big fish, recovery will not be eaten by small fish.
1. Isolation feeding: After finding that the fish is bitten, the first thing to do is to isolate the injured fish. No matter what kind of reason causes the bite, it usually happens once and there will be a second time. Therefore, it is best to isolate it before recovery. At the same time, it is also necessary to check which fish bit it. If it hurts other fish, it needs to be dealt with.
2. Sterilization and disinfection: Generally, after a fish is bitten, many bacteria and fungi will invade from the wound, causing the fish to get sick. Therefore, attention must be paid to disinfecting and sterilizing the wound. The simplest way is to soak in brine, usually 1% brine for a few minutes, or potassium permanganate.
3. Medication: For fish injuries, the best treatment is medication. Generally, yellow powder is more appropriate. It can be sprinkled in the whole tank, or it can be mixed into solution, and the fish can be put in the bath for 20-30 minutes.
