Often cheaper than salmon, tuna also has omega-3s. Albacore (white tuna) has more omega-3s than other tuna varieties. Try grilling tuna steak with dill and lemon. Reel in these other sources of omega-3s, too: mackerel, herring, lake trout, sardines, and anchovies.
Health Tip: Choose tuna packed in water, not oil, to keep it heart-healthy.