In Version 1.7.10 the Oven is available to replace the Furnace
In 1.10 Cooked Tofish was added as a meat substitute to Raw Fish.
In 1.7.10 Firm Tofu can substitute for Cooked Fish
EXCEPT! Calimari, Clam, Crab, Crayfish, Frog, Octopus, Scallop, Shrimp, Snail, and Turtle which become individual cooked items like Cooked Calamari, Cooked Clam, etc.
These items CANNOT be used to craft recipies.
Jellyfish are simply put into a crafting grid to yield slime balls.
Crafting Cooked Fish can be combined with other ingredients to create: