I have a 20g aquarium with 4 pygmy puffers in there and i would like to get some catfish for the bottom of the tank with them.Is there a small aquarium catfish that comes from the region of india?Also if there isnt a catfish that is from india what would be a good small catfish for a 20g aquarium?Iam just trying to make a setup that all the plants and aquarium fish come from india.Thanks.