To be honest, they are too new to be showing any signs of pairing behavior. For now, I suggest you just enjoy them as they grow Once they grow, then you will have a better chance of sexing them.Their bodies (without tails) are about the size of a quarter. I do realize they're young and small. I got them on Monday, and as always have been watching them closely. The three of them hang out together quite a bit; however, when they don't, the primarily black one will either hang out with one or the other, the two with more white don't really hang out together unless they are all together. The angelfish that is mostly white has started to develop a belly which is worrying me because I'm pretty sure it's too young to be carrying eggs (hopefully it hasn't eaten too much or has something wrong with it). None of them have shown any aggression.
To be honest, they are too new to be showing any signs of pairing behavior. For now, I suggest you just enjoy them as they grow Once they grow, then you will have a better chance of sexing them.
Watch and make sure you see all your fish defecating. As long as they do and it's a brownish color ( not white or stringy), they are okay. If this one fish doesn't "poo", you may want to isolate it and use Epsom salts to try to get it to "go". Did you quarantine these fish before you put them into your main tank?
Also, I don't really care if they breed or not. I bought them because I really just like them. However, I've heard they are happier when in a pair, and that's why I am hoping for a pair. I just want them to be happy fish
Andy Segar: thank up so very much for this info! It helps a great deal, and I will take your advise on being more specific in my postings.
Again, thank you!