Cobia substitutes

The nearest thing in behaviour - a dense fish that can be cut into steaks and thrown on a grill without care.

Best for

grilling, steaks, skewers, searing, blackening

Swordfish is even meatier and slightly denser than cobia, with a firmer, more compact bite and a marginally stronger flavour. It cooks the same way: high heat, about 4-5 minutes a side for a 1-inch steak, rested for a couple of minutes. Both have enough fat to survive that heat. Swordfish dries out faster once past medium, so watch the last minute closely.

The widest-available firm warm-water fish, sold frozen almost everywhere - a touch leaner than cobia.

Best for

grilling, pan-searing, fish tacos, blackening, skewers

Mahi holds together as well as cobia and takes a hard sear happily, so it is the practical everyday swap. It has less fat, which shows up as a drier finish: brush it generously with oil, and take it off the heat while the centre is just barely opaque. The flavour is slightly sweeter and a shade more pronounced than cobia's clean richness.

Firm, premium and reliable - the best choice when the fish is roasted or plated with a sauce rather than grilled.

Best for

roasting, pan-searing, poaching, butter sauces, sous vide

Halibut is leaner than cobia and breaks into larger flakes rather than staying dense, so a halibut steak on a grill is more fragile and more likely to stick. Where it wins is under a sauce - clean, sweet and firm. It is unforgiving about overcooking, so pull it at the point the centre is still slightly translucent.

Effectively interchangeable with cobia, and the best swap for raw or lightly cured preparations.

Best for

crudo, ceviche, grilling, searing, tataki

Amberjack and kingfish have the same firm, fatty, clean-tasting flesh that makes cobia a restaurant favourite, and they slice into the same neat translucent ribbons for crudo. Cooked, they are marginally richer than cobia and equally happy over coals. For any raw dish, buy only fish your fishmonger sells for raw consumption, keep it very cold, and use it the day you buy it.

Firm and mild and good on a grill, though noticeably leaner and flakier than cobia.

Best for

grilling, roasting, fish tacos, sandwiches, stews

Grouper is dense enough to keep its shape and mild enough to slot into any cobia recipe, but it flakes where cobia stays solid, so a thick grilled portion is more likely to break when you turn it. Snapper is firmer and more distinctly flavoured. Both are leaner, so oil them well, and neither slices as cleanly for crudo.

Firm, steak-cut warm-water fish with a stronger, more assertive flavour than cobia.

Best for

grilling, steaks, blackening, smoking

Wahoo is very firm and quite lean and can go dry fast, so it wants a marinade or a good brush of oil and a short time over high heat. King mackerel is oilier and considerably stronger tasting - closer to a proper oily fish - which suits blackening and smoking and overwhelms a delicate sauce. Both are cheaper than cobia where they are landed.

The right richness and the right grill behaviour, at the cost of turning the dish a different colour and flavour.

Best for

grilling, roasting, crudo, searing

Functionally salmon is a good stand-in: fatty enough to take high heat, firm enough to cut thick, hard to dry out. But it is orange and it tastes distinctly of salmon, so a recipe designed around cobia's clean neutral richness now has an opinionated centre. Use it where the seasoning is bold - a spice rub, a soy glaze - rather than where the fish is meant to be subtle.