Oak shrugs. "I don't know where to buy a fishing rod in town, but I'm sure there would be someone who could help you around the coast. There are a couple of fishermen living a few miles south who go out and fish in the Cinnabar straits. Perhaps one of those might help you catch something?"
He frowns as he thinks.
"I think you'd have to check some streams and rivers to find Magikarp though, being freshwater fish. They don't head out to see unless they're getting ready to evolve."
He smiles.
"And frankly, I don't think you really want to tangle with one of those until your Pokemon are much stronger. If you see a Magikarp in the sea, by advice is not to bother it!"