Can You Actually Swap Fish In a Recipe?

Yes. But you best know the three crucial fish categories.
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There are a lot of fish in the sea. No, we’re not talking about your dating life. We’re talking about real fish. The kind that swim. The kind you eat.

So why is it that most people rely on salmon? No shade to our pink-fleshed friend (we love it here, too), but there are so many other types. For the sake of avoiding weeknight dinner fatigue, it’s time to introduce some variety. The best way to go about doing that is to divide fish into three groups and swap within said groups. This is by no means an exhaustive list, but it includes many of the common types you’re likely to run into, most often cut into those large filets you see at the fish counter.

Let’s start with the fattiest, most full-flavored fish. That’s where salmon lives, along with arctic char and trout.

Next up are the still oily, though slightly-less-so fish. Here we have bass (either sea bass or black bass), snapper, branzino, sea bream, and dorade.

Finally, there’s flaky white fish, the least oily of them all. We’re talking cod, haddock, hake, pollock, and halibut. In this recipe for Family-Style Fish Tacos, we don’t even call for a specific one. The choice is in your highly capable hands.

Across the board, as long as you stay within those categories, swapping is not only possible, but encouraged. But you need to make sure you start with quality fish. Buying fish is like buying produce: You want it to look and smell fresh, especially if you’re shopping at a grocery store and not at a local fish market where, well, pretty much everything is fresh. The fish should have a bit of a glisten to it and seem plump and firm. Sad fish that’s past its prime will be somewhat matte and dry, sometimes falling apart a bit at the seams. When in doubt, and we’ve talked about this before, frozen is better than previously frozen and then thawed.

You can use any flaky white fish for these slow-roasted fish tacos.

Photo by Chelsie Craig, Food Styling by Olivia Mack McCool

But trust your gut and use your swapping know-how. If the halibut isn’t looking so hot, try hake. If you’re trying not to break the bank, opt for cod. Just make sure that no matter what, you’re following the recipe instructions for the form the fish comes in, be it skin-on or boneless and skinless, one big piece or several smaller cuts.

One more important note: When swapping, slightly different cooking times may apply. Don’t let that freak you out, though. Essentially, you’re cooking to indicators instead of an exact minute. (This is honestly the best way to cook in general, regardless of what you’re making.) When it comes to that flaky white fish, it’s ready when the thickest part begins to flake away in big pieces with a small amount of pressure, and has turned from translucent to opaque.

See? Not so difficult—and your dinner routine just got a whole lot more interesting. Now dive right in, switch and swap your fish, and change up your tried and true fish recipes.

This seems like a good place to start:

Fish tacos with salsa greens and avocado
No grill, no deep-fryer, no problemo. Our summery tacos rely on our go-to fish-cooking method—slow-roast, baby—for all the flavor without the fuss.
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