I still can't get over how great those pictures are. I love how the dad is inspecting them in one shot He seems very concerned, too.
I've actually seen a pic of another angel with eggs on a filter intake. Maybe it resembles something they would use in nature :huh:
The pic was from an aquarium suppy catalog, and wasn't NEARLY as good as the ones you took. Maybe you could sell these to them (Does that put you into the category of "fish pornographer", though?)
not too many white ones, more importantly, there are quite a few opaques it does look like a small spawn to me but hopefully, they will take good care of them opaques!