I am not developing or providing support for this mod any longer since I am not currently using it. As far as I can tell it should be it should be working fine, however I recomment you use Riften Docks Overhaul instead, which include this mod and a few extras and it's what I currently have in my LO. 


A port of flintone's Riften Fish Market. As the name suggests, it adds a fish market to the Riften Dock. Because having a fishery but no dedicated shop was weird in the first place. 

German SSE version here.

From Oldrim mod's description:

Description
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This mod was originally designed as a resource mod, but instead of the usual test room I decided to add something playful and I hope that you will like it.
At the Riften docks you can find a new Fish Market. Apart from the usual fish merchandise there are new food items: fish cans and salted fish. The market is run by Thed Soderberg', open from 8 PM to 6 AM. His wife Klara helps him in the business.


Details
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There  you find various new models combined with vanilla assets:
- buckets, crates, plates and market displays shelf filled with fish merchandise
- clam cluster, open clams, clam with pearl
- salt barrel and salted fish barrel
- fish cans
- salted fish food
- hanging fishing net and fish traps
- hanging slaughterfish

What's new in SSE Edition:
- Repacked to work with MO2 (& Vortex, I presume, but I tested in on what I use)
- Plugin cleaned up
- Meshes optimized (I left loose files)
- The two NPCs have been made Protected so they won't get randomly killed; also they are regular NPCs and not presets anymore
- I didn't include the lore-unfriendly can meshes, you can find them on the original page if you want to use them as resources.