Fishing Farm

You need to learn fishing at a fising trainer. Then you will get the fishing ability under your profession tab.

fishing ability proffesion tab

Malformed Gnasher Farming Spot – Uldum

This is the best spot to fish for Malformed Gnasher. In Uldum, you can do it for all places in the new version of Uldum. But if you stay in Ramkahen, then you won’t get attacked. 

Malformed Gnasher Farm - Uldum