You should be able to build a nest for the eggs. Territoriality is very useful for egg caring. One of the risk is getting broken by competitors of the fish. Besides, severe environmental factors may cause a damaging effect on the egg. This is what I can say. Above all, behaviour of the fish is governing. Egg caring can be done by the fish itself without your involvement. You need to conduct a research in order to effect a caring strategy plan. See it in depth!.

before the female has the eggs u should put the female in a seoerate tank if there is other fish in her take because the other fish can eat the eggs before they hatch

Your goldfish eggs should be kept in water that is not deeper than 6 inches. In deeper water the pressure can damage the fry and make it hard for them to reach the surface. You should raise the temperature to about 700F. 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. After about 48 hours they're air bladders will fill and they will start swimming normally seeking food. They will eat anything they can fit into their mouths. This is when it becomes important to have some food on hand.