small catfish

I have had a group of corys for about a year now and one of them hasn't grown at all. This little guy is about half of the size of the rest of them now and has never had any development of his barbels either. Anyone know what could cause this or if it is just a genetic thing? He seems happy and...

Hello, i have a twenty gallon tank that i would like to add a catfish into. I have seven guppies, a snail and a red cherry shrimp. Is there any species of catfish that i can keep with my fish and inverts without having to get a whole bunch of them. I want only one, not a whole bunch, just one...