In diamond, pearl, and platinum it is in Lake Verity and in heartgold and soulsiver it is in the lake of rage north of mahogony town
It Is a Shiny Gyardos if you want it red
i dont now
Gyardos is in Pokemon emerald and leaf green/fire red in emerald you can find him in sootopolis city by fishing with the super rod
Actually there is no red Gyrados. I mean there is, but a red Gyrados is a shiny Gyrados.
Unfortunately, you can't catch a Red Gyardos is Pokemon diamond, but you can catch one in Pokemon Heart Gold or Soul Silver. It'll be at Lake of Rage.
You need to catch red gyardos and stop the strange signal
you go to the lake of rage surf on the water catch or kill the red gyardos than lance will appear.
Red Gyarados is just a shiny Gyarados. I think the only way to get it is fish or surf for quite some time, only about 1 in 8000 (or close to it) appear. Use the TM False Swipe to make sure you don't KO it and paralyz it so it's easier to catch.
Go to the lake of rage and either KO or catch the Red Gyardos
When you get a red scale from gyardos, Mr. Pokemon will want it.Go to his house and give it to him and he will give you the exp. share.
first catch the red gyardos in the lake of rage by swimming up to it directly and then beat team rocket
Gyardos does not evolve.