im fairly new to the saltwater aquariums so i don't know if this is a stupid question. Last Friday was the first day i was able to put fish into my new tank so i went to my lfs. I bought one clown and one yellow tail damsel, but had to take the clown back because the damsel was beating up the clown forcing him to swim at the top of the tank on his side. so i traded it in and bought another yellow tail damsel but after a few days i realized at least in my tank all they do is hide and there not very fun to watch.So today i went to the fish store and bought two more clowns, the reason i bought two was just so i can have a pair so one will not get beat up from the yellow tails. so finally to my question will these two fish be able to mate?i wasn't sure because the one is black and the other yellow. the reason i bought them both was because the tank they where in they looked very close and even in my tank now they wont leave each others side. The black one is about twice the size of the yellow and can you also help me out with there real names please.