Photo: Philip Friedman/Studio D and Devon Jarvis/Studio D

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If you like canned tuna...
Try: Canned trout. It's as quick and easy to prepare as canned tuna, but one three-ounce serving of trout contains more than 500 milligrams of heart-healthy omega-3s. The fish is also an excellent source of vitamins B and D (essential for healthy skin and hair), with one serving meeting almost 100 percent of your daily need of each. Mix the trout into a burger, mash it with mayo and lemon juice or sprinkle it over a salad.