Is there a market for un-gutted fish? I've been working towards the angler achievement and from past experience perfect roes are roughly 1/100 sometimes 2. How much would say 100 fresh fish would be worth?
Be aware however people are going to want to spend as little as possible on the gamble of making more, so you won't get as much as a Perfect Roe is worth.
Edit: If you want to sell because you're worried about filleting the fish taking button spam, there is an add-on for PC (if that's your format) where it will just fillet away for you after one push. You can't do anything else in game but I normally set it going then go get lunch of make a coffee and walk around the garden for 10mins.
Edited by Turelus on June 2, 2017 10:39AM
@Turelus - EU PC Megaserver "Don't count on others for help. In the end each of us is in this alone. The survivors are those who know how to look out for themselves."