Selling Fish
When you catch fish, you can also sell the fish that you catch. Here are the locations where you can be able to sell the fish in. To do this, say, if you go to a good’s vendor and interact with the vendor of the goods, you will see that your fish is all gray out, you cannot sell it. The reason is that you cannot sell fish with normal goods vendors.
Trade Manager
The only way to sell fish is to go to the trade manager. To find the closest Trade manager, press M to bring up the map. Then press the search icon, followed by left-clicking the trade manager NPC shown in the picture below. The game will now path you to the nearest trade manager, where you can sell your fish.
In the trader manager, you will be able to sell your fish. Simply press the sell all, shown in the picture below.