You ever notice how much people love fishing? They put it on bumper stickers, hang it on signs in their garage, and wear shirts that say “I’d rather be fishin’.” That’s dedication. But why stop at rods and reels when you can go all the way and become the fish? A fish Halloween costume lets you bring that “gone fishing” energy into any party, parade, or trick-or-treat outing. The big question is: what kind of fish are you? Are you the funny goldfish, the creepy deep-sea predator, a shark, or maybe the one Dr. Seuss wrote a whole rhyme about? This guide will help you figure out your perfect catch.

So, why would a grown adult wear a fish costume? Maybe because it’s a hilarious costume. Maybe because it’s surprisingly flattering. Or maybe because you want to show up at a party and say, “Yeah, I’m dressed as seafood, and I’m owning it.” Whatever the reason, our fish costumes for adults cover all the bases, from quirky cartoon favorites to designs that are just creepy enough to make someone spill their drink. And don’t worry—we’ve narrowed it down so you don’t have to swim through the entire ocean. Up next are some of our favorite adult-friendly options.

Kids don’t need much of a reason to dress like a fish—they just love costumes. Maybe they saw a goldfish at the pet store, maybe they read Dr. Seuss, or maybe they just think it’s funny to flop around pretending they’re out of water like that one episode of SpongeBob. A fish costume for kids is one of those choices that’s adorable, a little silly, and perfect for trick-or-treating. Plus, it gives you an excuse to take about a hundred pictures of your child looking like the family pet before they outgrow it.