How To Reheat Fish Safely


When it comes to fish, the ideal time is right after cooking. It’s excellent when freshly prepared in any manner, whether grilled, baked in a pan, wrapped in salt and cooked in the oven, or served as steak that has only just been cooked on the outside. If you enjoy fish, you will want it cooked in any way. However, grilled fish is a superb seafood enjoyment for most people. But what if you have extra fish after lunch? Or how to reheat fish?

It’s a shame to waste it. Many connoisseurs advise that you consume the fish cold in that case. In the meanwhile, of course, it must be refrigerated. However, it isn’t always pleasant for every fish to eat cold. Some are only edible when chilled and have a strong odor. We have a few suggestions for reheating fish, but keep in mind that you should not cook certain fish.

How to Reheat Fish

We would generally advise against reheating fish since people prioritize freshness above all else. You’ve already cooked the fish once, which means there’s a good chance it’ll overcook if you reheat it – as anyone who cooks fish regularly knows, this is an irreversible method to make an excellent piece of fish terrible.

Avoid it if at all possible. However, such broad advice sometimes clashes with reality. There will be times when you have leftovers that won’t taste good if eaten cold.

Follow these easy steps to reheat fish, but don’t expect it to have the same zing as it did the first time. I am going to share two ways to reheat fish.

Reheating whole fish

If you have a whole fish in one piece, the easiest method to deal with it is to rewarm it without skin and maximize the crunchiness of the flesh. The skin will also help retain moisture within the fish, so keep it if possible.

It may be any fish, such as mullet, bass, or bream. When reheating, keep in mind the golden rule: cook slowly at a low temperature.


  1. It’s important not to overheat the fish when reheating it; therefore, set the oven temperature to only 275 degrees Fahrenheit.
  2. Put down the fish on a baking sheet and directly on the oven rack rather than in a pan. There will be no extra sauces to cause liquid to flow out of the oven since there will be no liquid coming out of the fish. The fish will heat up uniformly on all sides due to this method. However, if you don’t want them to stick, lay a baking paper over the pan and place the fish on it.
  3. Place the fish inside the oven and let it cook for about 15 minutes—that should be enough time. You can also check the temperature of the fish with a thermometer to see if it has reached an appropriate level.

Reheating fish fillets

When fish fillets are reheated, it’s far more hazardous that they’ll dry out considerably. The key is to pay greater attention to keep the juiciness going. In this scenario, you must bake the fish in an oven.


  1. In the last procedure, the heating temperature should be as low as possible. So, preheat the oven to 275 degrees F and let it warm up.
  2. To keep the fish fillets juicy, you must generate steam to heat up. So the most incredible thing to do is place the fish in aluminum foil. Add a few tablespoons of fish stock or water to moisten things up before wrapping everything tightly in foil.
  3. After that, add the foil-wrapped fish to the oven and bake for 15 minutes. Then, please remove it from the oven to ensure it is sufficiently cooked. When opening the foil, be careful not to burn yourself as there will be hot steam inside.

Few things you need to remember before reheating fish

Store your fish properly

Allow the fish to cool to room temperature before storing it in a clean, airtight container in the refrigerator, and don’t forget about it for three or four days. Reheat the fish as soon as possible, ideally on the day after you refrigerate it.

Do it gently

The only way to reheat fish is slowly and gently in a low oven, usually around 170 degrees Celsius/gas mark 3.

Wrap the fish in tinfoil lightly to prevent moisture loss, which you want to avoid (your nose will thank you for it as well). If you think the fish is already dry, add a spoonful of water.

Don’t wrap it in tinfoil if you’re breading or battering the fish to keep the crisp texture. Of course, if you’re going to the trouble of battering or bread-crumbing fish and preparing it, we recommend eating all of it before it goes bad.

Thicker fish will take more time.

The thicker the fish, the greater space you’ll have for movement. Rainbow trout will dry out quickly, but a portion of cod loin will lose moisture more slowly.

Maintain the balance

Please don’t set the fish in the oven and return in 20 minutes expecting it to be done. Check on the fish’s temperature and condition as often as possible since it’s a delicate balance between just-right and overcooked.

Frequently Asked Questions

How can I keep the fish fresher for longer?

If you have any fish leftovers, it’s a good idea to put them in an airtight container and seal it. It should last for no more than three days in the refrigerator. The length of time that fish is safe to eat is somewhat less than three days.

If everything looks and smells good, you may stretch it out to a fourth day if necessary. Frozen fish isn’t a good choice since it will lose both the texture and taste. If you must refrigerate fish for an extended time, do it while it is fresh and raw rather than freezing.

Is it possible to reheat fish in the microwave?

You can undoubtedly nuke your calamari, but it will slightly ruin your meal. Microwave drying out the fish destroys its texture. Also, nuking may often bring up fish smell, which is not desirable. If you must reheat fish in the microwave, try to do so in a 20-second time frame. Check your fish after each interval to ensure that it is cooked sufficiently. Don’t just put it in for 2 minutes and expect everything to be okay.

How can I tell if a fish is rotten?

The sense of smell seldom leads you astray. Even if the fish is still raw, if it has a distinct and unusual odor compared to their usual sea aroma, it should be avoided. Do not consume or prepare rotten fish. If it has an odd smell and appears distinct (mucus or mold forming), throw it out right away and don’t even try to reheat it if you cook and store it in the fridge.

When freshly caught, fish is a delectable dish. However, the leftovers the next day might be somewhat underwhelming. In that situation, it’s critical to heat the fish so you may enjoy it again thoroughly. The oven is the only reliable method for doing so. You will get the most outstanding results if you simmer fish at a low temperature.


Ozi is one of the newest writers for When he is not reviewing products & sharing his thoughts on new recipes, he enjoys spending time with his family and friends. In his spare time, he is surfing sites like, and , to gather knowledge and help you find the most reliable and trustworthy information, tips and hacks. In addition to the first-hand use of several of the products, he also likes to use the thousands of credible reviews from sites like,,, and the, to help you have the best gadgets and receipts to fit your kitchen perfectly.