Hi, I'm new at raising angels and would love to try and breed them one day. I have three set up I'm my 55g community tank with some black neons, spotted Pleco, spotted catfish, kuhli, dwarf gourami, guppies, and ghost shrimp. My angels are still pretty small, maybe an inch or two. My question right now is this; How do you tell the difference in sex, and will they lay eggs on the glass or do I need to add driftwood or a slate for them to lay on?