there is a 21 inch arrowana for sale near me but the only tank i have it can go in is a 72x18x18 with 2 9-10 inch o's and a 8 inch giraffe catfish in it i know the tank is to small for it but it will only be in there for roughly 2 months and it is an upgrade on the tank it's in now. my main question is would the arrowana be alright with the o's and the giraffe cat or would they fight