Jack LaLanne I only eat fish - no chicken, no turkey, just fish. I get all my protein from fish and egg whites.

The Discworld Novels by Terry Pratchett There is a kind of narrativium on Roundworld, if you really look.
On Discworld, the narrativium of a fish tells it that it is a fish, was a fish, and will continue to be a fish. On Roundworld, something inside a fish tells it that it is a fish, was a fish...and might eventually be something else...
...perhaps.

X-Men First Class film Sean Cassidy: You like fish, I like fish too. Maybe we should get a bite sometimes, talk about it.
Girl: I'd rather go out with the fish.

SpongeBob SquarePants Fish: Oh wait, uh, here he is! [picks up random fish]
Sandy: That ain't spongebob. Spongebob is square?
Fish: [squeezes random fish into a square]
Random fish: I'm ready, I'm ready
Sandy: No you ain't
Random fish: [holding a cereal box] I found Squarebob!
Sandy: That's just a cereal box! Besides, he's yellow!
Random fish: [holding a banana] Uh, here he is! Can I go home now?

iCarly Gibby: (after taking a fish out of his locker) Hey, Dad? Fire up the grill, I'm bringing home a trout!
Male student: Fish?
Gibby: My fish! (runs and sees Carly, Sam and Freddie) My fish!
Carly: Well, I kinda got him!
Sam: You got him dinner.

Dan Quayle If you give a person a fish, they'll fish for a day. But if you train a person to fish, they'll fish for a lifetime.

Finding Nemo I just can't afford anymore delays and you're one of those fish that causes delays. Sometimes it's a good thing. There's a whole group of fish; they're called delay fish.

Popeye Excellent idea, fish. Might I suggest, before matrimony, fish. Fish before matrimony.

Metalocalypse (Murderface's song)
Murderface: A million miles from nowhere, Dragon Lance burns hot. By the fire of a horse's ghost, a minnow would be lost... Cha-cha-cha-changes... mmmm, Tits... A fish... A fish with tits. Titty fish.

Fairly OddParents, The Timmy Clone: This Tea taste like Fat pink fish and stupid Green Fish!