Fish is a great food for pregnancy and breastfeeding mothers but be careful which fish you choose. While some fish contain Omega 3 fatty acid - important for the development of the central nervous system in babies, before and after they are born - other fish may contain mercury levels that can affect the development of your baby's nervous system, leading to delayed speech and movement.
Studies have shown that the foetus is most at risk from mercury levels in fish during the third and fourth months of gestation.
Women who are already pregnant, or planning to become pregnant within the next six months, should avoid fish with high levels of mercury, such as shark, swordfish, orange roughy, gemfish, ling, southern bluefin tuna and barramundi