5 Types of Fresh Fish Perfect for Tacos (And How to Prepare Them)

Hawaii waters offer a diversity of marine life that sets a global standard for seafood quality. The warm Pacific currents surrounding Oahu deliver a rotating selection of pelagic fish that many restaurants on the mainland simply cannot access.

Living and cooking on the North Shore since 2008, I have had the privilege of working with nearly every species that comes off the local boats. Running North Shore Tacos for the last 15 years has taught me which fish hold up to the heat of a fryer and which ones need the kiss of an open flame.

But not every catch is suitable for a taco shell.

Whether you are shopping at the fish market or picking up a fresh fillet from your local grocer, knowing which species to look for will change your homemade tacos from a simple lunch into a memorable culinary event.

Here is a breakdown of five Hawaiian fish varieties that work beautifully in tacos and how to prepare each one at home.

1. Mahi-Mahi (Dolphinfish)

Best for: Fried tacos

Mahi-mahi remains the undisputed champion of the fish taco world. Known biologically as Coryphaena hippurus, this surface-dwelling fish is famous for its vibrant gold, blue, and green scales. It is a rapidly growing species that typically reaches 15 to 29 pounds, providing thick, substantial fillets.

Why it works in tacos:

• Structural Integrity: The flesh has a high density that prevents it from falling apart in 375°F oil.
• Flavor Profile: It offers a mild to moderate sweetness that balances the acidity of lime and salsa.
• Moisture Retention: The large flakes retain natural juices even after deep frying.
• Sustainability: Mahi populations replenish quickly, making them a responsible year-round choice for Hawaii.

How to prepare it at home: Mahi-mahi is ideal for frying. Cut the fillets into thick batons and coat them in a seasoned batter or dredge before dropping them into 375°F oil. In the Baja tradition, beer batter is a popular technique for achieving crunch, using carbonation to create an airy, lacy coating. Whatever method you choose, the key is the same: a protective shell that steams the meat from the inside out. You get a distinct crunch followed immediately by tender, flaky white fish. Serve it in a warm tortilla with fresh lettuce, pico de gallo, and a creamy sauce.

2. Ono (Wahoo)

Best for: Grilled fish tacos

Ono is a Hawaiian word that translates directly to “good to eat.” Fishermen know this species as a high-speed predator capable of swimming up to 60 miles per hour. That active lifestyle results in a leaner meat structure compared to more sedentary fish.

Why it works in tacos:

• Texture: It has a firm, tight flake that resembles a premium pork chop more than a flaky cod.
• Cooking Speed: The low fat content allows it to cook rapidly over high heat without drying out if timed correctly.
• Clean Taste: It lacks the “fishy” oiliness of darker meat, acting as a perfect canvas for spices.
• Local Status: Ordering ono is often a signal that you are familiar with local island favorites.

How to prepare it at home: Ono belongs on the grill. Season it with a blend of cumin, garlic, chili, and lime zest before searing it over high heat.

The goal is a quick char.

Because ono is so lean, pull it off the heat the second it turns opaque to ensure it stays moist. Pair it with fresh pineapple salsa and avocado to add tropical sweetness and healthy fats back into the bite.

3. Ahi (Yellowfin Tuna)

Best for: Seared or poke-style tacos

Ahi is perhaps the most recognizable export from Hawaiian fisheries. While often served as sashimi, high-grade Yellowfin Tuna brings a level of richness to tacos that white fish cannot match. Look for “chocolate” or “cherry” red meat at the fish counter, which indicates a high oil content and superior flavor.

Why it works in tacos:

• Umami Depth: The red meat provides a savory, steak-like flavor profile.
• Visual Appeal: The ruby-red center creates a striking contrast against fresh green lettuce and yellow corn tortillas.
• Nutritional Value: A 3-ounce serving packs about 24 grams of protein and is rich in Omega-3s.
• Versatility: It can be served raw (poke), seared rare, or fully grilled depending on the cut.

How to prepare it at home: Treat ahi with minimal intervention. Sear it hot and fast in a cast-iron skillet to keep the center rare and cool.

Thick slices are essential here.

Lay the seared fish over fresh lettuce and finish it with a creamy sauce, a squeeze of lime, and fresh pico de gallo. This preparation bridges the gap between traditional Mexican tacos and Hawaii’s bold culinary influences.

4. Opah (Moonfish)

Best for: Rich, hearty grilled tacos

Opah is a biological marvel and the only known fully warm-blooded fish. This massive, disc-shaped species can weigh over 100 pounds and yields seven distinct types of meat from a single fish. The culinary world prizes it because each section offers a different texture and color, ranging from ruby red to pale pink.

Why it works in tacos:

• Complexity: The flavor is often described as a cross between tuna and swordfish.
• Fat Content: It has a higher fat percentage than mahi or ono, giving it a creamy mouthfeel.
• Rarity: Finding fresh opah is a treat, making it a special occasion fish worth seeking out at the market.
• Robustness: The meat stands up well to citrus-heavy marinades without becoming mushy.

How to prepare it at home: Grill opah to highlight its natural richness. A simple citrus-chili marinade cuts through the fat just enough to brighten the flavor.

Serve it inside warm tortillas with fresh pico de gallo and avocado.

The freshness of the pico provides the necessary balance to opah’s buttery texture.

5. Shutome (Broadbill Swordfish)

Best for: Hearty, steaky grilled tacos

Shutome, or Broadbill Swordfish, is the ideal choice for carnivores who think they dislike seafood. Caught in the deep waters off the North Shore, this fish possesses a dense, meat-like structure. It is harvested strictly according to federal quotas, ensuring the population remains healthy in US waters.

Why it works in tacos:

• Density: The texture is firm and substantial, similar to a high-quality sirloin steak.
• Mildness: Fresh shutome has a sweet, mild finish with zero brininess.
• Durability: It is one of the few fish that can be cubed and grilled on skewers without falling apart.
• Pairing: Its mild taste supports bold, spicy toppings like habanero or cayenne.

How to prepare it at home: Marinate shutome in a mixture of lime, garlic, and achiote paste. This imparts a vibrant red color and an earthy flavor profile before it hits the grill.

The char marks are essential for flavor.

Dice the finished steaks into thick chunks and serve them with fresh pineapple salsa and crisp lettuce. This combination offers a hearty meal that satisfies big appetites after a long day in the surf.

Choosing the Right Fish for Your Taco

Standing at the fish counter can be overwhelming. Use this quick reference to match the fish to your taste preferences and cooking style.

Fish	Flavor Profile	Texture	Best Cooking Method
Mahi-Mahi	Mild, sweet	Firm flake	Fried
Ono	Clean, buttery	Delicate, lean	Grilled high heat
Ahi	Bold, savory	Meaty, steak-like	Seared rare
Opah	Buttery, complex	Varied, rich	Grilled
Shutome	Mild, sweet	Dense, firm	Grilled/charred

Want Us to Do the Cooking?

If you would rather leave the prep to someone else, come visit us. Our Surfin’ Tacos feature locally caught fresh fish — fried to a golden crisp and served with jack cheese, fresh lettuce, pico de gallo, and our signature Surf Sauce.

The catch changes daily based on what the local fleet brings into the harbor, so the selection is always fresh and always local.

Stop by our Hau’ula restaurant or the Sharks Cove food truck and let our crew handle the hard part.

Check out our full menu for current pricing and additional details.