I need a bit of advice from fellow aquarists. I've got a fully filtered, heated, and cycled 10 gallon aquarium. Currently there are 3 Otocinclus and 3 Julii Corys in it... plus a little Java fern if that counts for anything. ;) I used to have a betta in there with them, but he got to where he was chasing them away from their food, so he's in his own separate home now.
Seeing as all of the fish I've currently got are bottom feeders, I want to get something colorful that will swim in the mid to upper levels of the aquarium. I was thinking I might get 2 or 3 male guppies, but before I do I want to know whether that might risk overstocking or cause any other issues with compatibility. If so, is there a fish that someone can suggest?