+1 on the chalceus suggestion. Great top water fish. I got mine at 3" and he's maxed out at around 9-10". Loves worms and is lightning fast to get them when I throw them in. Stunning big silvery brassy scales, very large eyes, yellow pelvic fins and of course it's very large red caudal fin. A good lid is a must, they are jumpers if given the chance. Only downside for me is that they can be a bit skittish.
Awesome ,Thanks for the info. How is the aggressiveness?