what are the dimensions? 5x2x2?? if so, i'd put 6 wide black bar silver dollars, 2 banded leporinus, 1 royal pleco, but the leporinus might bother the pleco, and 1 big cichlid as a center piece ..
A 180 for free.....Its hard to beat that. The options are pretty well open for you. You can have anything from 1000 guppies to a few big predator fish.
I have a 220 (same footprint, just 6" taller). Its a African Tanganyika tank with a Frontosa colony.
i have an African Cichlid tank already so i wanted to switch it up a bit i would like big like maybe an arowanna would love to have one you know along those lines but i dont know if my tank will be big enough for that caliber of fish