I just thought I'd keep it going and suggest a Lung fish. I dunno 55? I'm just throwing this out there... Firemouth, JD, EBJD, a lima could call it home for a long time.
ive been thinking and this is what ive come up with
x1 tiger oscar
x1 common plec
x1needlenosed gar
x1black ghost knife
x2pictus catfish
keep in mind that the oscar would go into a bigger tank once he reaches about 8 inches but the oscars i saw at the lfs was only 3 in and the needle nosed gar was about 8 inches already... would they be fine together or would the gar kill it? thanks for the help SpJc11