They cost more to make than the fish traps, yet fish are way more useful…
Fish can be used to make oil (best fuel), Ichor(For alchemy and such) and fish strips (not half bad a food for something that can be mass produced).
For shellfish however you can only get ichor from shrimps, lobsters fill up your belly quick but honestly is not a big advantage especially when you can eat 2 fish strips for the same effect and also have great health regen.
And dry fish/shellfish in general are just bad, real bad.
I’m suprised we don’t have any shellfish recipes among 10 special recipes, we really need some good recipes