My poor silver mollie. The black one keeps attacking her, the new white one I got that's half the size keeps bugging her, too, and the male (that's half her size) is also driving her nuts. I can't win. Maybe she's just not meant for this tank. I guess I'll give it a couple days and maybe they'll all get used to each other.
I give up! 
I give up! 
To my surprise, the rest of the 3 mollies are now getting on great! B) I guess they all just needed a little time to get used to each other. I hope it stays that way. I put the black mollie back in this AM and she's STILL acting the same way. I think I am going to have to get rid of her.