Originally Posted by rstampa
I have a pair of Breeding Angles. However, within a few hours a lot of the eggs turn white. I don't know why so many so quickly. I have a nice flow of water over them. So what is the best way to prevent this from happening. Eggs unsuccessfully hatch.
They're in a 65 gal
If this is the first or first few spawns, it's not unusual for them to be duds. If this is a young pair of fish, the female may be more mature than the male. If you obtained a verified breeding pair, it's not unusual for breeders to sell off old pairs that don't have good spawns anymore.
With all that said, if the fish are in a community tank, it's not unusual for the males to defend the spawning site and not fertilize the eggs in time.
The best way to have a successful spawn is to keep the breeding fish by themselves, keep the foot traffic low by the tank, use sponge filters instead of overflow type filters so that the milt has enough time to fertilize the eggs and don't expect any successful spawns for the first 4-6 tries. ( It sometimes doesn't take that long but it can.) Make sure your water temp is 78-82 degrees, there is no ammonia or nitrite in the water and the nitrate level is as low as possible. Feed high quality proteins as the usual diet but more so 7-10 days before expected spawning.
( This is the formula I've used to produce millions of Angelfish fry.
Hope this helps