I just got a Betta, his name is Chaotic, he's blue, silver and black but how do i know what kind he is?? Also, i got him from Wal-Mart(i know cheap) but he just wouldn't stop looking at me now i love him and want more. They kept saying he's a cold water fish, How can i make sure he is very happy?? Should i always put other males in separate tanks. Is there any thing live that he likes to eat??