Can haddock be marinated overnight in refrigerator?

Yes, haddock can be marinated overnight in the refrigerator. Marinating for this duration allows the flavors to penetrate the fish, enhancing its taste. However, be cautious with acidic marinades, as they can break down the fish's texture if left too long. A good rule of thumb is to limit marinating time to about 30 minutes to 2 hours for delicate fish, but if using a mild marinade, overnight is generally acceptable.