I have a 180 gallon tank 6*2*2 and i want to get a group of lyonsi in there and when get a pair move them to there own tank. i was wondering what else i can keep with them in the 180. right know there is 4 giant danios cycling it. i can move those or sell them if needed. there is sand in the tank and a large piece of drift wood will be added. i want some kind of rarer catfish and a really pretty top level fish please help first really big tank.