Keep Baby Fish Alive - Check the tank for fish eggs. Once you see that the eggs have been laid, remove the adult fish from the tank and put them in another one. Otherwise, they might eat the fry.
Use a sponge filter. A sponge filter will remove all traces of ammonia and nitrite from the water and provide the fry with food in the form of zooplankton, which grow around the filter.
Keep Baby Fish Alive
Test the temperature of the water using a thermometer. The temperature for the fry should be between 76 and 80 degrees Fahrenheit for tropical fish and a little cooler for koi and goldfish.
Test the water for calcium levels. To raise fry, the calcium level should be about 20 parts per million.
Feed the baby fish a live diet, such as Brine shrimp, microworms or daphnia. You should feed them four to six times a day.
Newly hatched baby fish are known as fry. If you have both male and female of the same fish species in your tank, then eventually you may have baby fish in the tank too. If you follow the proper guidelines, you can raise healthy baby fish into adulthood. - by eHow
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