Legendary fish location: Anyone know?

Hi,
I was wondering anyone ever catch these fish before? It shown on CUL recipe page but Im not sure they are exist in the game or not because I never catch them.

Here's the list
River Sand : http://lodestone.finalfantasyxiv.com...sId=H&rankId=5

Sea Sand : http://lodestone.finalfantasyxiv.com...sId=H&rankId=5

I'm confuse that if they don't exist, why SE put this recipe online? .. Any clue?

They don't exist in game yet. Not sure why SE put the recipes in game.

maybe they ARE in the game BUT we need the luminary rod! :D

everyone, out and play 10 days without sleep for the rod, its worth it for fish thats worth 10 mil each and can get 2 stacks per hour :D

They mentioned Gr. 6 nodes "soon"...