30 gallon oddball tank help

[Fish_lover]

I Want a 30 gallon oddball tank so if you know any fish ( freshwater ) please tell me , I want them to be cool and " interactive " fish that I could just sit down and watch for the whole day . I don't really care if it's Just one fish or a whole bunch of different fish . So thanks in advance .

 

[Fish_lover]

I've also been looking at freshwater flounders so if you know any other fish that can go with that go ahead and tell me