wow-sorry this happened! if you have a cover (my 180 gal tank is acrylic and has two pieces that cover openings on the top) and the fish can still manage to slam into it, lift the lid and get out i would get a book, or some rocks to keep the lids down while you arent there..
i hate seeing fish jump-i had a pleco jump and couldnt find the sucker for a few months-til i moved the tank and found his crispy corpse behind the tank lol