Since all of the Redbelly pools have been removed from Jade Forest, this Profession guide should be updated to delete all the pool spots there. AFAIK, the only place Redbelly Mandarin pools spawn now are in the Vale of Eternal Blossoms and the northern part of Townlong Steppes. They can still be caught in open water in Jade Forest, but at a pretty low rate. Why Blizzard did this, I have no idea, but they've sort of become MoP's equivalent of Lavascale Catfish.
[see: http://www.elsanglin.com/fish/redbelly_mandarin.html ]