? If you want to hatch fish eggs, you need appropriate temperature, certain water flow and sufficient oxygen. First of all, the temperature, usually compared with the breeding of adult fish, the water temperature during hatching is slightly higher, about 2 degrees higher than normal. The second is the water flow, if the fish tank has a filter, it can provide water flow, but the water flow can not be too large, otherwise the eggs will be sucked away, so the loss outweighs the gain. The last is oxygen, which is best oxygenated with an oxygen pump at all times.
after hatching? 1. Temperature control: After hatching, we should first pay attention to temperature control. Because fish are poikilothermic animals, even adult fish have a certain impact on temperature changes, not to mention fry, keeping a constant temperature is very important for their growth, if the temperature difference is too large, it may lead to a large number of deaths of fry.
2. Feeding: Usually there is no need to feed the fish eggs on the first day after hatching. At this time, the yolk sac has not been absorbed, so it can continue to get nutrition, but wait until the next day to prepare food. Usually it is best to feed the fry with running water. If not, you can also feed a little cooked egg yolk. When feeding, you should wrap it with gauze and gently twist it into the fish tank.
3. Change the water: Fish farming needs to change the water, so does the hatched fry. However, the fry has a weak ability to bear the fluctuation of water quality, so it is not necessary to change the water in a hurry. Generally, it is necessary to change the water for the first time in a week of hatching, and the amount of water should not be too large, preferably not more than one fifth.
