How to Butterfly & Grill Whole Red Rockfish | Video Guide
How to Butterfly and Grill a Whole Red Rockfish
Whole Pacific rockfish is well suited to grilling because the skin helps protect the flesh while the fish cooks. Butterflying opens the fish flat, increases the seasoned surface area, and makes it easier to cook evenly over the grill.
This video guide focuses specifically on whole-fish preparation: butterflying, seasoning, grilling, basting, and serving. For a broader guide to grilling rockfish fillets, see our Grilled Rockfish Guide. For species, taste, and buying information, visit our Rockfish Guide.
Before You Start
Rockfish is a market name used for multiple Pacific species. The fish shown in this video is presented as red rockfish; exact species should be confirmed from the catch or supplier information when species identification is important.
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Shop current options in our Rockfish Collection. Our Fresh Rockfish Fillets are a separate fillet product and should not be interpreted as a guaranteed whole red-rockfish offering.
How to Butterfly a Whole Rockfish
- Keep the fish cold. Work with properly refrigerated fish on a clean cutting board.
- Open along the backbone. With a sharp fillet or boning knife, cut carefully along one side of the backbone while keeping the belly connection intact.
- Open the fish flat. Spread it like a book so the interior is accessible.
- Remove the backbone and ribs. Work slowly to preserve as much flesh as possible. Remove remaining bones as practical.
- Clean the cavity. Remove the gills and any remaining blood or membrane, then pat the fish thoroughly dry.
The head may be left on for presentation or removed before cooking.
Citrus-Herb Marinade
- 1 tbsp sea salt
- 1 tsp black pepper
- 1 tsp paprika
- ½ tsp ground coriander
- ¼ tsp chili flakes, optional
- 1 tbsp olive oil
- Juice of 1 lemon
- 2 cloves garlic, minced
- 1 tbsp chopped dill, thyme, or parsley
Mix the ingredients and season the interior and skin. Because the marinade contains lemon juice, keep the marinating period relatively short. About 30–60 minutes under refrigeration is usually enough for a butterflied fish. For advance preparation, use the dry seasonings first and add lemon closer to cooking time.
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Simple Basting Sauce
- 2 tbsp melted unsalted butter
- 1 tbsp soy sauce
- 1 tsp lemon juice
- 1 tsp honey or maple syrup, optional
Mix and brush lightly over the fish during the final minutes of cooking. If using a sweetener, watch the grill closely because sugars can brown quickly.
How to Grill Butterflied Rockfish
- Preheat the grill to medium heat, approximately 350–400°F (175–205°C).
- Clean and oil the grates, or use a fish basket if preferred.
- Place the fish skin-side down first.
- Cook until the skin releases more easily from the grate, then turn carefully. Cooking time varies with fish size, thickness, grill temperature, and whether the lid is open or closed, so use time only as a guide.
- Brush with the basting sauce during the final few minutes.
- Check the thickest part with a food thermometer. Cook fish to an internal temperature of 145°F (63°C).
- Rest briefly before serving.
Rockfish Is Not Snapper
Pacific rockfish and true snapper are different groups of fish. Pacific rockfish commonly sold under the rockfish name are generally associated with the genus Sebastes, while true snappers belong to the family Lutjanidae. They can sometimes be prepared with similar cooking methods, but they should not be treated as the same species or product category.
More Rockfish Cooking Guides
- Best Rockfish Recipes & How to Cook Rockfish
- How to Grill Rockfish Fillets
- Pacific Rockfish Guide
- Shop the Rockfish Collection
Frequently Asked Questions
Can frozen whole rockfish be used?
Yes. Thaw it completely in the refrigerator and keep it refrigerated until preparation. Pat the surface dry before seasoning and grilling.
How do I know when whole rockfish is done?
Use a food thermometer in the thickest part of the flesh and cook to 145°F (63°C).
Is red rockfish the same as red snapper?
No. Pacific rockfish and true snapper are different fish groups even though market names and recipes have sometimes blurred the distinction.
Can I cook the butterflied fish in the oven?
Yes. Roast on a lined baking sheet and use internal temperature, rather than a fixed cooking time alone, to determine doneness.
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