Oops sorry, I was wrong. edited.
Watch out for: High-mercury fish
Why: Certain fish -- mostly big, top-of-the-food chain types -- contain high levels of mercury, which isn't good for anyone's health (pregnant or not), but they can be particularly harmful to a developing baby's nervous system, lungs, kidneys, vision, and hearing. On the Do-Not-Eat list: shark, swordfish, tilefish, king mackerel, orange roughy, grouper, tuna steaks, saltwater bass, and canned solid white albacore tuna (which is bigger, and has therefore more mercury than the smaller tunas used in the kind labeled "chunk light"), according to Redfern.
Bottom line: Steer clear of high-mercury fish, but don't give up seafood entirely. Many varieties, like salmon, herring, and sardines, contain heart-healthy omega-3 fatty acids including DHA, which research shows may boost fetal brain development. In fact, one recent study found that nearly 75 percent of pregnant women may not be eating enough low-mercury fish during pregnancy.
BUT
Watch out for: Sushi and sashimi
Why: There's a slight chance that raw fish may contain bacteria or microbes that could cause food poisoning. "But the main concern with sushi is that in the unlikely event that you get a parasite, it's not only exceedingly unpleasant, it's harder to treat in pregnancy. The parasite can also take vital nutrients away from your growing baby," says Dr. Morse. Plus, some of the most popular sushi rolls (like spicy tuna) may contain too-high mercury levels.
Bottom line: Skip raw-fish sushi, but rolls made with fully-cooked fish are A-OK. Sushi made with eel, crab, or anything done tempura-style (which means it's been battered and fried) is perfectly safe to eat. California rolls also make the go-for-it list, as do veggie rolls, like avocado or cucumber.