What if Joe survived, with his henchman Shark drinking enough potion to become a land shark (though not any smarter) & left the ocean together to break into Fly's house for vengeance, while his family's away for whatever reason?

FUN FACT!
Joe's design (the fish one) was inspired by Joe Pesci, the actor who played one of the incompetent burglars from the original Home Alone duology. Prolly why he's named that in the first place lol

Merry Fishmas, ya filthy mammals!