Here is a simple recipe for cooking whiting fish:

1. Preheat the oven to 400°F.
2. Season the whiting with salt and pepper.
3. Mix together the butter, garlic, red pepper flakes, lemon juice, and zest and then pour the mixture over the whiting fillets.
4. Place the lemon rounds on top of and around the fillets.
5. Bake the whiting for 10-12 minutes or until the fish is fork-tender.

Alternatively, you can cook whiting fillets with skin by following these steps:

1. Season the whiting fillet with pepper and salt.
2. Heat a frying pan.
3. Add 2 tablespoons of olive oil and stir.
4. Cook the fillets for 3-4 minutes with skin side down until the skin is crisp.
5. Cook for another 2-3 minutes on the other side.

You can also butterfly a fish by cutting it open from top to tail and then grilling or pan-frying it .