Who has these fish and can just a few be put together? I have a heavily planted 29 gal. and I wanted to keep just a few. Some people tell me that I can and can't. Please enlighten me. It only has 3 Catfish Sharks and 2 Pictus Cats. Don't know if the cats will stay though. And who sells a good, quality selection of these and other fish on the internet cause my sources are limited locally. And does anybody know of like an online freshwater fish encyclopedia? Thanks