Do you have a preference for a certain type of fish...like predator, community, schoaling, etc...?
You'll get a lot of responses that are what the poster likes, but you may not like them. If you can give an idea as to what you prefer, that would help a lot.
If this was my tank, I would have some baby datnoids, a few Ctenopoma acutirostre, and maybe a nice pleco...like an L066 King Tiger. :dance: