Fish is a healthful food that is the primary dietary source of elongated n-3 polyunsaturated fatty acids (PUFA), nutrients essential for optimal neurodevelopment. Most pregnant women in the US do not consume adequate n-3 PUFA. However, fish also may be contaminated with methylmercury, and approximately 10% of women of childbearing age in the US have mercury levels higher than recommended. Because the same food contains both essential nutrients and harmful contaminants, substantial confusion reigns about the best course of action for pregnant women. Additionally, it is not clear what fish consumption advice would be most effective in changing women's fish consumption habits. The goal of this pilot study is to perform formative work to allow us to develop and refine an intervention to promote consumption of fish low in mercury and high in n-3 PUFA among pregnant women. This project, together with a pilot RCT already funded, will serve as preliminary data to support a larger RCT to evaluate the effects of the intervention on pregnancy outcomes and postpartum maternal and infant health.