Hello. I cant make up my mind. I'm getting a 40 gallon aquariums, and I dont know what to get. I either want to get.... Guppies, mollies, 2 piranhas, a chiclid and a betta. Which one? I want to get a betta, but first, will you tell me which it will NOT get along with? I know pirahas can get along with most fish. But can a betta work with chiclids?