Bluefin Tuna Fillet

Bluefin Tuna Fillet is an ingredient.

Source
Bluefin Tuna Fillet can only be found by catching a Styrial Bluefin Tuna in the Cygillan Sea. There is always a Styrial Bluefin Tuna available during the A Second Sea God Quest.

Recipes
Bluefin Tuna Fillet is used in the following recipe:
 * Scientia-Style Sushi

Catalyst
Bluefin Tuna Fillet can be used as a catalyst in spells:

Trivia

 * The Styrial Bluefin Tuna and its fillet and subsequent recipe are a part of Royal and Windows Edition, and they have no effect on completing the standard game's recipe list.