Hi so I have a oscar tank with 2 Oscar's and 6 silver dollor and soon i have plans to buy a 180gallon tank I was wondering I could put a reticulated stingray, a clown knife and a pecock bass in with the Oscar's I know how controversial the pecock bass tank size is that's why I am asking I have seen people say 180 is fine and others who say 300 is the min so what ever you guy think is best for the fish let me know.