So here is the deal, I just planted my tank very heavily and there is not a lot of floor space left. I was wondering what kind of bottom feeders I could keep who would be happy with a very small amount of open floorspace but plenty of places to hide! The tank is a 20 gallon standard with 6 Harlequin Rasboras and a whole load of plants! I guess if there arent any fish I can keep I will throw in more snails and some ghost shrimp....