The proper temperature to oven bake fish ranges from 350 degree Fahrenheit to 450 degrees Fahrenheit, depending on how the fish is prepared. Fish steaks and fillets are generally baked at a higher temperature, whereas whole fish is baked at a lower temperature.
Fish should be completely thawed before baking. Once ready to bake, rinse the fish under cold water, pat it dry and place it in a greased baking dish or sheet pan. Brush the fish with olive oil or melted butter and season to taste.
The length of baking time depends on the thickness of the fillet as well as the length of the whole fish.