How can you cook Bluefish to make it taste good

First of all remove the dark meat next to the skin, as this is where most of the oils which cause the strong flavor reside. If u already tried this & the fish still is too strong, I would try soaking the fish in vinegar for a few hours (this should help to reduce the harsh flavor) before cooking. As far as cooking goes, I would poach it in a lemon-butter-wine sauce or broil it with a flavorful glaze. There should be a variety of good glazes available at ur grocery store, or u could try making ur own.

Herbed Bluefish Fillets

Ingredient
1/2 small yellow onion, finely chopped
1 clove garlic, minced
1 tablespoon minced parsley
1 tablespoon Dijon or spicy brown mustard
1 teaspoon fennel seeds, crushed
1/2 teaspoon salt
1/4 teaspoon black pepper
3 tablespoon vegetable oil
1 tablespoon lime or lemon juice
Dash hot red pepper sauce, or to taste
Dash Worcestershire sauce, or to taste
1 1/2 pounds bluefish or mackerel fillets, cut into 4 serving-size pieces, or 4 tuna steaks (6 ounces each
In a shallow baking pan just large enough to hold the fish in a single layer, stir together all ingredients except the fish. Add the fish, rubbing the marinade lightly into the flesh. Cover & refrigerate for at least 1 hour. Will keep, refrigerated, for up to 5 hours. Preheat the broiler. With a slotted spatula, transfer the fillets to a lightly oiled broiler pan; set the marinade aside. Broil the bluefish or mackerel fillets, skin side down, 4 inches from heat for 5 to 6 minutes or until the fish flakes easily when tested with a fork. Baste once with the marinade but do not turn. Broil the tuna steaks 4 inches from the heat for 4 to 6 minutes; turn, brush with the marinade, & broil 4 to 6 minutes more or until the fish flakes easily when tested with a fork. Serves 4.

the bluefish is nasty well that is what i think my mom use to wash it and then just put in in the pan but it still tasted weird so she put some spicing and maybe that is what you need to do is just put a little bit of spicing