I love fishing for bluefish.
They're mean, they kill for fun.
They'll devour everything in front of them, then puke it up and go back for more.
They got teeth like razor blades that will destroy your flies and will even bite through your fly line if it get in their way.
They battle until the end and when you finally land one their eyes stare at you full of hate and you realize that if you make the mistake of getting too close, they'd gladly take your arm off or at least a finger.
There's no more worthy fly rod quarry.