Angel fish sexing

[Voja]

I have 2 Angel Fish in my tank that keep laying eggs. However, they are not fertilized and they won't up eating them in a day or 2. I wanted to see if anyone here could help me with sexing them? There is always the possibility that they are both female.

 

[betta fish]

The best way is to look at the vents but this only really becomes apparent when the fish spawn. I take it the the marble laid the eggs? so we know she is female, the female will have a large square shaped vent when spawning to allow the eggs through where as the males will be smaller and more triangular.
There is a lot of eggs there so it is possible they both laid them, are they both passing over the pipe when the eggs are being laid? if so seeing as the eggs are not fertile I would imagine they are both females.

 

[SeanTrollope]

yes most likely. also if one is a male it would be the one looking after the eggs most of the time. and if you are lucky you could observe him fertilizing them. but chances are that they are both femails

 

[Byron]

Eating the complete spawn within a day or two days is very common for the first several spawnings of tank-raised fish. This never occurs with wild angelfish, interestingly, unless they are stressed during the spawning. But with tank-raised fish, which would be the case here as neither variety is the natural wild form, this is common.

It still may be that both are females, not suggesting otherwise, but the eating of the first few spawns is something to keep in mind.