I have an empty 20 gallon tank with sand. I want to put some cories in there. Which kind should I get? Can I get one of each from my LFS or will they fight? Im trying to keep them with some kind of cichlid. I like to stay with american cichlids. So looks like yall are building my tank. I dont have much money so they must be sorta cheap. So tell me which cories and which cichlids. Thanks for your help.