Wahoo Fish
Wahoo (Acanthocybium solandri) is a fast-swimming, warm-water game fish related to mackerel and tuna, prized for its firm, lean, mild-flavored flesh. It's sold mostly as steaks or fillets, has a pale pinkish-white color that turns opaque white when cooked, and holds up well to grilling and searing without falling apart. In Hawaii it's commonly called ono, which means 'delicious' in Hawaiian.
Varieties
Wahoo is sometimes confused with mahi-mahi or escolar due to similar appearance and marketing names, but it is a distinct species. In Hawaii and much of the Pacific it's sold as ono; in some markets it may also be labeled 'kingfish,' though true kingfish (king mackerel) is a different, oilier fish.
Buying tips
Look for steaks or fillets that are firm to the touch, translucent pinkish-white rather than dull or grayish, and free of a strong fishy smell. Because wahoo is not farmed and is caught wild, availability and price fluctuate seasonally, with peak supply typically in late summer and fall.
Substitutes
Mahi-mahi — 1:1
Similarly firm and mild, slightly moister; the most common substitute in fish markets and restaurants.
Swordfish — 1:1
Denser and meatier with a slightly stronger flavor; works well for grilling in the same thickness.
Yellowfin tuna — 1:1
Best for searing rare to medium-rare rather than cooking through, since tuna dries out fast at well-done.
Halibut — 1:1
Milder and flakier than wahoo; reduce cooking time slightly since halibut has less connective tissue holding it together.
Storage
Fresh wahoo should be used within a day or two of purchase, stored in the coldest part of the refrigerator on a bed of ice or in a sealed bag. Frozen wahoo keeps well for up to 6 months in a vacuum-sealed bag at 0°F; thaw overnight in the refrigerator rather than at room temperature to preserve texture.
How to use
Grill or sear wahoo steaks over high heat for 3-4 minutes per side, since the lean flesh dries out quickly past medium. It also holds up well to blackening, fish tacos, and ceviche, where its firm texture keeps clean cubes instead of turning mushy.
What it pairs with
Pairs well with citrus-based marinades, mango or pineapple salsa, coconut milk, and light soy-ginger glazes. A squeeze of lime and simple olive oil sear let its mild flavor come through without competing.
Nutrition
Wahoo is very lean and high in protein, with less fat than tuna or salmon, making it a good source of lean protein without much omega-3 content by comparison.
FAQ
Is wahoo the same fish as mahi-mahi?
No. They're different species often sold side by side because of similar texture and mild flavor, but wahoo has a leaner, denser flesh and a more subtle taste.
Does wahoo taste fishy?
Not particularly. It has a clean, mild flavor closer to swordfish or mahi-mahi than to oilier fish like mackerel or bluefish.
What's the best way to keep wahoo from drying out when cooking?
Cook it quickly over high heat to medium doneness at most, and avoid overcooking past an internal temperature of about 130-135°F, since its low fat content means it dries out fast beyond that.
Can wahoo be eaten raw, like in sushi or ceviche?
Yes, sushi-grade wahoo is common in poke and sashimi preparations because its firm texture holds together well when sliced thin.
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