Male and female red zebra fishes were mated up and put into fish tank, the bottom of which is covered with small pebbles, to reproduce. One couple of fishes lay about 200~300 eggs and these eggs hatched out colorless, transparent larval fishes about 48 hours later. Protozoa, rotifer and egg yolk were used to feed these larval fishes and after two months 48 small red zebra fishes that were 2 to 3 centimeters long were got.