Fish and shellfish take center stage when it comes to antiangiogenic omega-3 fatty acids in the diet. Omega-3s also get a lot of attention as a healthy fat that supports the cardiovascular system. The types of fish highest in omega-3 fatty acids include clams, some types of tuna, salmon, halibut, herring, mackerel, arctic char, sardines, swordfish, squid, and rainbow trout. When choosing seafood, there’s more to consider than what’s good for your individual health; there’s also the health of the oceans and our environment. The fish in this chapter are those that come from sustainable sources. Notably, aquaculture has come a long way, and some farmed seafood is actually among the highest in quality and environmental sustainability. Choose your seafood carefully, and experiment with the most sustainable varieties, such as farmed arctic char, mussels, clams, and trout.