Barren Flounder and Rathe Muskie

[Auricula]

Each of these can be combined in a tackle box with foraged Roots, Celadine Herb, and a Filleting Knife to yield Prepared Fish and regular Fish Bones.

This was done with a fishing skill off 200, so I can't narrow down the trivial any for you.

[Krazick]

Added the fishy recipes.