A few catfish that I would suggest are Raphael Cats (striped or spotted) very attractive dont get more than 5-6" Syno Cats all species of them are very cool I would suggest getting one that stays smaller, if you want Corys I would get at least 4 of them so you have a school and I like the Bronze ones I dont think they get more than 3-3.5". Make sure you have alot of good hinding spots for any catfish, as they like to hide alot.