There ain't a lake rage. The person above messed up.There are 4 lakes:acuity,valor,verity,and spring path
No. The Lake of Rage is only in Gold, Crystal, Silver, HeartGold and SoulSilver. In Platinum, it's Verity, Acuity, and Valor.
There is no lake rage on pokemon platinum, the lakes are acuity, valor, and verity.
The lake of rage is actually mesprit lake you have a 1.75 percent chance of finding red Gyarados