The fish will hatch in 3-4 days. By the end of the first day you will notice that some eggs are clear tan to yellow while some are white. The ones that appear almost clear are the ones that are fertile. The others are more than likely infertile and will be subject to fungus. The fungused eggs should be removed immediately, or the fungus can spread to kill the other eggs.
Some breeders add a few drops of methylene blue to the water to cut down on the fungus occurence.
The fish will hatch out along the region of his back, pulling his tail out first, then moving it to release its head. At birth the fish is about a 16th of an inch to an 8th of an inch long with two black eyes, a long notochord, and a full yolk sac. These transluscent fry should not be disturbed. Do not be alarmed if they fall to the bottom. Within 48 hrs of hatching they will have absorbed their yolk sacs and an air bladder and rudimentary pectoral fin will become noticeable.