sinnoh Pokemon won't appear in Sapphire version!
It is not possible to get the Red Gyarados in Pokémon Yellow version. You can only get it in Gold, Silver and Crystal version.
Best non-legendary water pokemon would be Gyarados. Best legendary water pokemon is Kyogre.
Gyarados is rare to catch, but you can try in the water of Sootopolis City. It's much easier to catch a Magikarp and evolve it into Gyarados at level 20. You can find Magikarp anywhere by fishing with the Old Rod.
Quick balls don't exist in sapphire.
Catch a shiny magikarp and evolve it.
sinnoh Pokemon won't appear in Sapphire version!
you need to have the sapphire version in the gameboy slot and the diamond version in the other slot
i don't think so since sapphire is a game-boy version and diamond is nintedo ds version but since sapphire is a game-boy version you can migrate Pokemon from there.
Goldeen, Gyarados, Whiscash, pretty much any Pokemon that looks like a fish.
Spiritomb is not available on Pokemon Sapphire Version.
No, its a fake Pokemon
It is not possible to get the Red Gyarados in Pokémon Yellow version. You can only get it in Gold, Silver and Crystal version.
Pocket Monsters Sapphire Version [Japanese Version of the game] was released on November 21st, 2002. Pokemon Sapphire Version [American Version Release]: March 17th, 2003 Pokemon Sapphire Version [Australia]: April 3rd, 2003 Pokemon Sapphire Version [Europe]: July 25th, 2003 So currently, it is about 8 [9 in November] years old in Japan [2011] and 8 years old in America, etc. ~Pokemon fan
use their Pokemon
Best non-legendary water pokemon would be Gyarados. Best legendary water pokemon is Kyogre.
In Pokemon Crystal version, you catch it at the Lake of Rage.