Just recently our Three temensis peacock bass have formed a pack and have attacked my jack dempsey,lima cats,and who knows whats next.Any fish that can handle a pack of peas??Or should the tank just be all peacock Bass?Its a 300 gallon tank.The peas are 14 to 20 inches.The jack dempsey is 8 inches and the lima cat is 14 inches and they still tryed to eat them??