well in my 220 i have 2 15 inch gars,14 inch silver arrow,18 inch gold line knife, 14 inch clown knife,8 inch royal clown knife, 7 inch pbass and 6 inch stingray and everything is going fine right now but i kinda wanted to add a 8 inch bowfin but im not sure . im getting 2 and i want to put one in there and one in my 125 with my dorado and reddevil and black pike but if you guys dont think he will get along in my 220 then ill put both in 125 until they get to big and then move them to pond