How to Reheat Fish Safely?

The first bite of the first dish is a flaky, soft, juicy piece of fish with a hint of crunch on the outside, or it could be a mouthwatering seafood item that has been battered and audibly crackles with flavor. You prepared enough food for two or three meals for yourself or your family, and the leftovers were placed in the refrigerator immediately.

However, it is now time to reheat it for a different supper. When you take it out of the fridge, you ask yourself, “How can I reheat this, so it tastes just as delicious as the first time I cooked it?” We have some great suggestions for warming leftover fish to taste just as good as the first time, whether fried, battered, baked, or broiled.

Can You Reheat Fish?

  • Yes, You can reheat fish. However, you may also remove your fish from the refrigerator and allow it to come to room temperature. Without needing to reheat it, you can eat it this way.
  • Some people favor doing it this way since fish can easily overcook, even when being reheated, and lose its flavor.
  • Additionally, warming salmon in the microwave releases the fish’s fatty acids, which can make the kitchen smell terrible.
  • Therefore, we suggest leaving the fish to rest at room temperature if you do not want to block off your kitchen or workplace for lunch.
  • Put them on top of an oven or another object that gradually warms up so that they can at least absorb some heat, and you can continue to eat fresh food.
  • If you’d like, thick fish slices can be heated through again, but tiny fish slices shouldn’t be heated through again.

How to Reheat Fish Safely?

Fish can be reheated in a few different ways that are all safe. The amount of time needed for cooking must be considered. Thinner fish often overcooks and dries up too rapidly. Choose meatier cuts like tuna and swordfish steaks to avoid this. When reheated, fatty fish frequently has a fishy scent because the oxidized fatty acids generate pungent-smelling aldehydes. Fish will taste and feel awful as a result of this.

Using a low-temperature oven to reheat fish is one of the safest methods. Set the thermostat to gas mark three or 170C. To prevent moisture from leaking while baking, carefully wraps the fish with tinfoil. Thicker fish—like cod loin—will lose water more gradually, whereas those that are thinner will dry out more quickly. Therefore, whatever kind of fish you choose, make sure the internal temperature is at least 125°F or 130°F.

Being cautious when reheating fish is vital because it is fragile flesh. Choose low heat and perseverance above quick and easy if you prepare it.

Proper Storage

The most significant outcomes when reheating leftover fish will be considerably aided by storing it properly. For no more than three to four days, store it in the refrigerator in an airtight container. Although freezing it would degrade its quality, it is an option if you need to retain the leftovers for more than a few days (but not the best for flavor and texture).

The Better, Thicker

Thicker fish cuts will have a better chance of retaining flavor and moisture. Thin fish, like flounder, trout, or tilapia, tend to dry up and overcook exceptionally quickly. If you choose to reheat thick swordfish or tuna steaks, you will have a better chance of maintaining the fish’s tenderness and juiciness.

Do remember that fatty fish, such as salmon and mackerel tend to release a more pungent fishy odor when reheated than when it is cooked initially and eaten. This occurs due to the oxidation of its fatty acids, which produce potent-smelling aldehydes and intensify the aroma of fish.

Dry, overcooked fish results from cooking it at a high temperature.

Reheating fish boiling is one of the most frequent and costly mistakes. Salmon is one type of cooked, dry seafood that isn’t tasty or enjoyable. Reheating at a low temperature should always be done very gradually. Going slowly ensures that the fish retains as much moisture and suppleness as possible, losing significantly less than you would on high heat.

Don’t Use the Microwave

Reheating your food is simple, practical, quick, and requires pressing one button. Additionally, it will overcook and dry out your fish. Unfortunately, using your microwave won’t help preserve the delicious flavor of the fillet from last night. Microwaves quickly dry out fish by applying too much heat, which causes its fatty acids to oxidize and release that occasionally objectionable fishy aroma. You know how sometimes a coworker cooks some seafood in the office microwave, and the entire day will smell like that? Using the oven to reheat fish at low temperatures and slowly will assist in battling fishy solid scents. A range would do a better job of keeping that smell within.

Cover the Fish at All Times

When you reheat your fish in the oven, cover it loosely with foil to prevent the edges from drying out and to provide further protection against fish odors. Additionally, this will help ensure that your fish is thoroughly warmed through without the middle drying out.

It won’t Taste Exactly Like it did When it was Fresh

The first won’t taste the same the next day as when it was first served, even if you follow every precaution and advice we’ve offered. Therefore, be sure to adapt your expectations appropriately. Even while the fish may still be juicy and soft and taste fantastic, the second night’s meal won’t have the same flawless flavor as the first. If the flavor of the remaining fish isn’t to your taste, you can always repurpose it by flaking it into a completely new dish like hash or fish cakes.

How to Warm Fish?

  • Keep it well-ventilated and for no more than three to four days.
  • Always cover fish to ensure consistent heating, prevent drying, and lessen fishy odor.
  • If you can, try to stay away from the microwave.
  • Don’t anticipate it to taste the same as when it was first served.


It’s not a good idea to reheat fish in the microwave. We are aware, however, that not everyone has the luxury of taking their time. If you absolutely must use the microwave, we advise using a microwave-safe cover, operating it at 30 to 40 percent of its maximum power, and heating the food in bursts of 30 seconds until thoroughly heated. To ensure the fish cooks evenly, flip it over every 30 seconds. Fish that has been baked, stewed, or sautéed may occasionally reheat well in the microwave.

Toaster Oven

A toaster oven performs admirably when reheating breaded and fried fish, just like a larger oven. The majority of toaster ovens offer moderate, even heating. Always wrap your fish in foil before putting it in the toaster oven, preheat it to between 275 and 350 degrees Fahrenheit (but not beyond 350! ), check it frequently to make sure it’s heating evenly, and take it out as soon as it’s heated through to your liking.


Pre-heat to 275 or 350 degrees Fahrenheit (But do not exceed 350). If the fish is unbreaded, cover it with loose foil on the dish, plate, or pan you use in the oven. Stovetop or Skillet: Using the stovetop or skillet to reheat fried fish is achievable if a fishy smell doesn’t bother you. If your fish is breaded or coated, leaving it uncovered will assist recover crispiness to the outside, but you may lose moisture. It is possible to reheat fish stew or sautéed fish using the same cooking method (a cooktop). Add oil to a skillet, heat it slowly, and then add the fried fish. To ensure it is heating evenly and you aren’t overcooking, cover it and check it every three minutes. Fish should be flipped as little as possible to prevent flaking.

Fish is a beautiful, remarkably healthful, and adaptable food. Even a day later, savoring it shouldn’t be a terrible experience, and if you follow the above instructions, you should have no trouble eating your favorite fillet again.

The Best Way to Reheat Fish

The best method for reheating fish is a gentle one, which involves cooking it for a more extended period at a lower temperature. Cook the leftover fish for about 15 minutes at 275 degrees Fahrenheit in the oven (or toaster oven, if you don’t want to use the more significant device). The internal temperature of fish should be raised from 125°F to 130°F. If you’re already using the grill and it won’t be any more work, you could also do it there over low indirect heat.

Another critical step in successfully reheating fish is to cover it with aluminum foil while it’s heating up. As a result, the fish retains moisture and doesn’t dry out on the outside while being cooked. Add a few teaspoons of water or broth to the foil cover to enhance this result.

Generally speaking, thicker cuts endure reheating better than thinner ones. In comparison to tilapia, trout, or flounder fillets, reheating salmon or swordfish steaks yields a more tasty, moist end product. Salmon and mackerel, for example, can release a mildly unpleasant odor when reheated, and that is typical and doesn’t imply that the fish is subpar.

Tips for Cooking Fish Safely

Fish should be defrosted overnight in the refrigerator, suggests the Food and Drug Administration (FDA). If you don’t have time to thaw the fish overnight, place it in a sealed plastic bag and submerge it in cold water until it is defrosted.

If you decide to microwave-thaw frozen salmon, cook it right away. According to the USDA Food Safety and Inspection Service, some parts of the fish may start to cook, and storing partially cooked food for later use increases the risk of contracting a foodborne illness.

Fish with fins should be cooked to 145 F, according to The flesh ought to be opaque at this time and easily flake with a fork.

How is Leftover Fried Fish Reheated?

The oven is the ideal place to reheat fried fish. Set your oven’s temperature to 350°F (180°C). The fried fish should be placed on top of a wire rack established over a baking sheet (to catch any crumbs or liquid drops). The fried fish should be reheated in the oven for about 10 minutes or until it is boiling.

How do You Use Microwave to Reheat Fried Fish?

Utilizing a microwave to reheat fried fish:

But we advise against using the microwave unless you want to eat mushy leftover fried fish. The issue with this method is that your food heats up quickly due to the high heat, which results in the soggy mess you get when you remove your dish from the microwave.

Does Warmed Fish Taste Good?

Thin fillets do not rewarm well; thick fish does. Unsurprisingly, thick filets and steaks are reheated much better than skinny ones. Halibut and swordfish steaks warmed excellently, maintaining their wetness and tasting the same.

Is Reheating Fish a Good Idea?

Since we consider freshness the critical component of good fish, we usually advise avoiding reheating. Reheating the fish bears the severe risk of overcooking it, which is a sure way to ruin a good piece of fish, as anyone who often cooks fish will know.


When served freshly, fish is a great delicacy. The leftovers, though, can be a touch unsatisfying the next day. In that situation, it’s crucial to thoroughly reheat the fish so you may eat it once more. The only reliable method is to use the oven and heat it slowly and at a low temperature to get the most outstanding results.