Are women advised to avoid all fish products during pregnancy?

The answer is: no

In general, women are advised to consume fish during pregnancy, as it is an excellent source of protein, omega-3 fatty acids, and other essential nutrients. However, some fish are high in mercury, which can be harmful to the fetus. Therefore, women are advised to avoid fish that are known to be high in mercury, such as swordfish, shark, king mackerel, and tuna steak.