Monster Magikarp?

[Zombiekiller23]

In Platinum there is a pond near the villa and a guy there says that there is a monster magikarp residing in there....Has anyone caught it? 

[Nightmare Eater]

Haven't played Platinum in a while but I'm sure he was talking about a Gyarados he saw or lying so you would waste your time.

[Liam]

He's talking about the high level Magikarp you can catch there with a super rod.

[Utack and Swampy]

My sister caught a golden magikarp over there once.

Of course, I realize he's talking about the high level magikarp, but I like to think that was the master of the lake he was mentioning XD

[kr9q]

I caught one level 76 once.

[kathbenn906]

Sounds like the guy in Gold and Silver trying to catch his giant Poliwag.

[Catstorm]

There are Magikarp in there over level 90.

It's the best pool of water in the entire Pokémon series, and the highest leveled wild Pokémon you can find.

It's so beautiful.

[The last sheikah]

The Magikarp in that water are (presumably) an equal chance to be any level from 1 to 100, so you have a 1% chance of getting a level 100; apparently that's the only place you can find a level 100 in-game without training one up. It'd kind of suck, though, that you could never evolve it.

[The Collector]

^It does, until you trade it to HGSS, then trade it with jasmine for an easy level 100 steelix

[Pie_lover]

I'm new to platinum so can anyone tell me where to find this pond? Thank you!

[Del]

I'm new to platinum so can anyone tell me where to find this pond? Thank you!

Bulbapedia suggests it's the Resort Area. I don't know where that is because I've never played Platinum, but check there.

[lugia95]

Yeah, TidesOfDel is right. You have to beat the Elite Four first, though. After that it should be pretty clear.

[BrokenSNES]

I managed to find a level 100 magikarp by luck !