05-12-2010, 02:13 PM
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You've partly answered what I was after.
Angels frequently (more probably, always) fail in the first several attempts at spawning. It is interesting that this does not occur with wild caught fish, but with tank-raised angels (which is what you will see in almost every store now) it is almost always the case. It takes several attempts before they get it right. They will eat the eggs for no apparent reason.
Moving the eggs to a separate tank is what many do (assuming they are fertilized), and providing an airstone under the egg mass (laid on a piece of slate for instance in a bare spawning tank) to prevent fungus, and some add methylene blue to the water for the same reason.
Because the whole process of angels rearing their fry is so interesting, unless you want to breed fish commercially, I would leave things alone and when the pair (assuming they are a pair) are settled, it will be a fascinating experience.
If you are getting eggs this far, to move them--did any turn white themselves? Infertile eggs (not fertilized) turn white quite quickly, whereas fertile eggs remain clear and develop. If the parents look after the eggs, they will pick out any infertile ones and eat them. The white fuzz is fungus, which as I say occurs if the water is not moving past the eggs. This task the parent fish do with their fins. Again, I would leave them to settle down, it will be well worth it.