In gold/ silver/ crystal at the lake, in firered/leafgreen, ruby/saphirre/emerald, diamond/pearl/platinum you have to catch a eceedingly rare shiny magikarp and train it.
It is red because it is shiny and its only luck to find one
well there are no common shiny Pokemon in heart gold but i have seen a shiny garados's and a shiny medapod. so maybe garados.
yes it will. ex: a shiny gold magikarp will evolve in to a shiny red garados.
it is a red garados (remember shiny Pokemon are rare)
You can trade it from heart gold/ soul silver or get lucky and find a shiny magicarp (golden/yellow) and evolve it into shiny gyarados (red gyarados)
a shiny magi karp will
Gyrados's shiny color is red so if you ever find a shiny gyrados or magikarp catch it. Also at the lake of rage you can catch one that is already red.
After you catch shiny garados and defeat team rocket
Easy... Look on your pokegear map and follow the path to it. If you have surf you can catch a shiny garados
a red gyrandos is a shiny Pokemon and it lives with other gyrandos-in water
They only way to get a shiny gyarados is to either get a shiny magikarp and evolve it, or catch a shiny gyrados with a super rod. There's no special place to get it. Just the 1/6000 chance of getting a shiny. No one really knows why a red gyarados was mentioned at the beginning of the game.
It's also possible to catch it. Beat it the same way as a normal Garados..