Originally Posted by SBoMb
Cool! and i didnt know that either the first time i played..but when i restarted i got it and used it..and hes a gyarados now too
I've known of it since my first playthrough of Pokemon FireRed. I never bought it from him though, since there are a zillion Magikarps just waiting to catch some bait out there in the Kanto seas.
...unless of course the Magikarp that you receive from him has better base stats then a typical Magikarp caught at sea.