I have three new angelfish, around one year old. I recently bought them from another person via a web site. The person had taken poor care of them...they are all around 2 1/2 inches long, stunted in growth. They don't have the long fins. There old place was dirty, practically black, and the previous owner used carbon rocks for the bottom. They came in a 10 gallon tank, and seem happy in it because they aren't very big. Is this okay? also, do you think i would be able to put in two platys? One is male, i think because of the very pronounced hump on its head. I cleaned out the tanks, and the water is clean and nice. Do think that these fish are beyond repair because of their old owners mistakes?? thanks, Grace's little sis, Allie