My wife wants to take down her 10G Nano in which she has a small Percula clownfish. I already have a larger YSM clownfish in my 120G at the office. The YSM pretty much hides in the rockwork on one end of the tank. Is it a death sentence for the Percula to introduce it into my 120G or given the size of the tank, is there a chance they will co-exist? Thanks for the advice!