Can someone let me know the average cooking time for fish?

I can't locate one of those handy time tables on the microwave in the employee break room.

@Alice You’re going to want to allow half an hour for a can of tuna
@JackEastman Aw, shoot. I wish I would have brought my oven mitts. That can is gonna be HOT!
@Alice and the light show will make up for forgetting to go outside to see the aurora the other night