This recipe works great with any firm, white fish. I recommend red snapper fillets, grouper fillets, or amberjack for saltwater fish. Catfish or tilapia for freshwater fish. The cooktime specified is for fillets about 1 inch thick, so adjust your cooking time accordingly. If you don't have a fish grilling basket, you can use a disposable aluminum pan...directions are included. Be sure to rinse the capers to remove the excess salt.