Cooked Fish is obtained by cooking Fish at a Campfire, Fire Pit or Star. Unlike most foods, it is no different in hunger and health restoration than its raw version, though it spoils slower than raw fish. Like all cooked foods, it cannot be dried on a Drying Rack.
When examined by certain characters, such as Wilson, the character will say, "Now I shall eat for a day." This is a reference to the proverbial saying, "If you give a man a fish, he'll eat for a day. Teach him to fish, and he'll eat for a lifetime."
When a Fish is on the ground, it flops around, then perishes, its eyes becoming crossed out.
Wickerbottom's favorite food is Fish, judging by her examination quotes. This is referring to fish being considered a "brain food".
Fish having a spoilage time of 3 days could be a reference to one of Benjamin Franklin's quote, "Guests are like fish. They stink after 3 days."