I second the SB FH. You won't likely find more of a wet pet. Acaras or keyhole cichlids could be another fit. I also like a firemouth in that tank. There are some good noncichlid options. If you don't mind going brackish figure 8 or green spotted puffers are a good fit. For an oddball it is tough to beat leopard ctenopomas. They take a little while to settle in, but they become pretty interactive once they settle in.