I have a 33 g and my fish is in my sig. My question is since most of the big fish in my tank are mid and bottom dwellers, I would like to fill the top with fish that is not too big(not more than 2" in adult size) and are not fin nippers. I was thinking of getting maybe 2-4 black phantom tetras or tiger barbs(little risky) also i want some colors too so if you guys have any suggestions please be free to post your ideas . Plus do you think that I'll be overstocking my tank if I get 2-4 more small fishys?