I've had my angel for about 4-6 weeks, and he's about half dollar size, perhaps a little smaller. He's in a 28 gallon tank with 2 platies, a cory, 4 otos, and a female betta. I know that the cory should be kept in a group, but I've had trouble establishing cories in my tank, and he's the last one I have. As for the platies, they seem quite content for the time being. I'm wondering if my angel might be lonely. 28 gallons is obviously too small for 2 adults, but I'm not too worried about tank size, becuase I could always move them around. Would my angel be happier with a buddy? If so, could I buy several, and let one pair up with my current angel, and then return the others? Or would that be a bad idea in a 28 gallon tank? If I removed all the other fish beside the angel, and added the new angels just until one pairs up with my angel, would that be okay?