well, my boyfriend has revealed to me that while he does like my puffers and couldn't care less about my community fish, he WOULD be interested in setting up a 180 or 200 gal tank when we get into a house (with a ground floor for a big tank that can be set up and not moved again ). he loves the tiger oscars, i love the albino tigers. we were thinking at least one of each, but if we could fit another that'd be great. how many fully grown oscars could live in either the 180 or a 200 gal US tank, along with some larger catfish (one or two maybe)? also, just what large catfish would work with them?