Although Fishing is a frowned upon WoW profession, with the arrival of Legion this trade skill can bring you a decent amount of gold, especially in conjunction with Cooking. The gold farming method that we?re going to put into view here involves both these secondary professions.
Requirements:

Minimum level 100;
Fishing skill 1;
Cooking skill 700;
Recipe: Fighter Chow acquired;
In case you don?t have this recipe already (if you?ve leveled in Azsuna, you should probably have it), you need to acquire it first. It is a reward from the quest Morale Booster. This quest is part of a quest chain that starts with an item called Okuna's Message. This item is dropped by the murlocs at El?dranil?s Shallows (50,32), NW from Nar?Thalas Academy.

Where to go:
Teleport to the new Dalaran, and fly to Azsuna, at Felblaze Ingress (64,28, in the area called Farondale.

What to do:
You?ll be fishing for Cursed Queenfish at the two small ponds in Farondale. However, there?s only one Cursed Queenfish school that can spawn in each pond, so you?ll have to hop servers, in order to benefit from a school of fish all the time. Also, it?s quite important to fish in the schools of fish, otherwise you?ll get Silver Mackerel, which are not so valuable.
Now, a batch of Fighter Chow requires 5x Cursed Queenfish. Thus, it?s best to catch a number of fish which is a multiple of 5.

Once in a while, you?ll also get a Rusty Queenfish Brooch. If you use this item, you?ll get a buff that lasts 5 minutes, buff ...