I know how it feels im sorry for your loss! 
I would take it to a taxidermy n get it mounted. Sorry for your loss, sounds like he had a good long life.today at about 9:30 guy dangerous my favorite arowana has gone to the pond in the sky as i type this im crying i grew up with this fish and seeing it just dead floating is just unbelievable we got him around the same time i was born so rest in peace guy dangerous gone but not forgotten November 29 1999-November 27 2013
maybe u can give other aro a gd life too when u Get rid of ur grief so sry of ur lost I lost my childhood cat recently and it really does suck loosing a much loved pet.
