Halibut (cooked) can be consumed during pregnancy but requires caution. Moderate mercury — limit to 6 oz per week. The key guidance from FDA: Limit to one serving per week. Potential concerns include: Moderate mercury levels. These risks are manageable when you follow the recommended limits. When consumed appropriately, halibut (cooked) does offer benefits such as Protein and Selenium.
A "Use Caution" rating means this food is generally fine during pregnancy but comes with a specific factor worth managing — a daily limit, a preparation requirement, or a moderation guideline — rather than a reason to avoid it outright. These ratings reflect general guidance from the FDA, ACOG, CDC, and USDA. The goal of the "caution" label is to flag what to pay attention to, not to suggest the food is unsafe when that factor is properly managed.