Costco's Fresh Wild Mahi Mahi Fillet is a premium, wild-caught fish sold by the pound from the warehouse seafood counter. Mahi mahi (also known as dolphinfish) is a firm, meaty whitefish prized for its mild, slightly sweet flavor that appeals even to those who typically shy away from seafood.

The fillets feature dense, firm flesh that holds up exceptionally well to a variety of cooking methods, including grilling, baking, pan-searing, poaching, and air frying. Cook to an internal temperature of 140°F for best results. The mild flavor and hearty texture make mahi mahi an ideal choice for fish tacos, sandwiches, grain bowls, and weeknight dinners. It pairs beautifully with citrus-based marinades, blackening spices, mango salsa, and fresh herbs.

As a wild-caught fish, mahi mahi is a lean, high-protein seafood option. A typical 4-ounce serving provides approximately 100 calories, 21 grams of protein, 1 gram of fat, and 80 mg of cholesterol, with no carbohydrates — making it an excellent choice for low-carb and high-protein diets.