I hand spawned my gold fish two times. Both the times the male had lots of milt and the female had about 200 eggs. But the eggs never hatched. Can anyone please help. The second time I tried adding methylene blue in the water in which i had spawned. Is it supposed to be added after or before the spawning( some one said that the milt becomes useless when you add methylene blue)? I added a air stone also the second time.Please help me. My goldfish are chasing each other once a week.