How to take care of newborn fish;
The temperature is kept at around 28 degrees.
Change water: if it is a fish tank with filtering equipment, change water once every three days, and change one third each time. If it is a small fish tank (if the tank is too small, be careful not to raise the density too high), then change it once a day, about one fifth. It should be noted that the water temperature of fresh water should be as consistent as possible with the water temperature of the original cylinder, not too different, preferably within plus or minus 0.5 degrees. Because the small fish is too fragile at this time, don't let the impact of the water flow be too strong when changing water. Another thing to note is that you must not use the tap water that you just took out. The tap water just taken out contains many substances harmful to fish, so the water just taken out must be left for two or three days before being changed for small fish.
Feeding: Go to the fish market to buy that kind of fine nematode. Of course, small fish can't eat such a long nematode, so they need to cut it into small pieces of about 0.2 cm by hand or other tools. This will make it easy for small fish to eat. Eating some raw egg whites is really not good.