ok i am new to fish aquariums and i had a beta, cichlid, three bala sharks and three rainbow sharks all in one tank. the cichlid killed my beta the first day they were in the tank. today, about five days later, i found a bala shark dead. i'm not sure that he killed it since i didn't witness it but i have my assumptions that he did. are there any other fish that can live in the tank with the cichlid? i am planning on moving the sharks out to another tank.