Different kinds of fish have different isolation time after birth. Small fish usually need to be isolated for one to two months, and if they are well raised, they only need two weeks. Big fish and small fish should be mixed, and we must ensure that the size of the small fish is large enough not to be eaten by the big fish. When mixed farming, we must provide enough food, so that we can avoid the situation that big fish eat small fish.
1. Not feeding on the first day: The newly born small fish cannot be fed on the first day. At this time, the fish still has yolk on their bodies. This is their main source of nutrition. They will not eat anything until they have absorbed it. It usually takes a day to find that the fish has no yolk before it can be fed.
2. Choice of feed: If the fish has not been hatched for a long time, it cannot be fed with fish food or other feed for adult fish. If the fish is too small, it can only eat plankton. It can also be fed with cooked egg yolk, but it must be gently twisted. Too much can easily spoil the water. Similar foods include soybean milk or milk.
3. Precautions: Feed the small fish separately, that is to say, one tank is used for feeding at ordinary times, and one tank is used for feeding. The water in the two tanks should come from the same source, and the water temperature should be close to each other. The reason why special feeding tanks should be prepared is that many foods will spoil the water, and if the water quality deteriorates, it will affect the survival of fish.
