I have a 20" pleco and a 9" featherfin in my 180 gal tank. I am looking to get some other fish that won't bother my catfish. I know the pleco won't suck on them because I used to have blood parrots in there with them but they have been moved to my 90 gal. My LFS said silver dollars and 1 or 2 larger central American cichlids would be fine. Would this be a good setup? I just want to find some fish that will all get along for this community.