How to Get a Shiny Magikarp for "Pokemon Emerald" with GameSharkby Daniel ValladaresUpdated September 22, 2017
In "Pokemon Emerald," you can catch a shiny version of any Pokemon in the game. The shiny version of a Pokemon is similar to a holographic card. Although it's no different from other Pokemon, it is exceedingly rare. Using a GameShark modifying device, you can make all of the Pokemon you encounter shiny. With this code in place, you simply go to any location that contains Magikarp and catch one in order to obtain a shiny Magikarp.
Plug the GameShark into the Game Boy Advance. Connect the "Pokemon Emerald" game to the GameShark by inserting it into the cartridge opening of the GameShark.
Turn on the system. Input this code at the cheats screen:
D8BAE4D9 4864DCE5 A86CDBA5 19BA49B3 F3A9A86D 4E2629B4 18452A7D DDE55BCC
You must input all four lines in order for the cheat to work.
Select your "Pokemon Emerald" save file and start the game.
Approach any body of water and use the Old Rod to begin fishing. The only Pokemon you encounter with an Old Rod are Magikarp, which are found in every body of water in "Pokemon Emerald." Once you have encountered a Magikarp, use a Pokeball to capture it.