Cooking fish from frozen can actually be beneficial in some ways. For one, it helps preserve the fish's natural moisture, resulting in a more tender final product. Plus, it's a great way to reduce food waste, since you can cook the fish straight from the freezer without having to thaw it first.
Now, I know what you're thinking: "But what about the texture?" Fear not, dear reader, for the texture of cooked-from-frozen fish can be just as delightful as fresh fish. Just be sure to pat it dry before cooking to remove excess moisture, and you're good to go!
Another surprising fact is that some types of fish are actually better suited for cooking from frozen. Fatty fish like salmon and tuna, for example, hold up particularly well to this method. And if you're feeling adventurous, you can even try cooking shrimp from frozen – just be sure to rinse them under cold water first!
Steaming Frozen Fish: How Long Does It Take? | CyCookery