angelfish tropical freshwater

Hey everyone! So I noticed recently that one of my angelfish hasn't exactly been growing. I have 3 angelfish, I got them all at the same time, all were about the size of a thumb. Now two of them are about palm sized, except the one I'm concerned about. He's still roughly the size of my thumb...

Hi! right now I have 2 angelfish in my tank and I got them at the same time at the pet shop. They are about the same size and around 2-3 inches. I noticed that they swim together and they don't seem to show any aggression. I googled around and I saw that males have bumpier heads while females...