Oven grilled fish is not unique to Casablanca.  What is unique is that you can purchase your fresh fish at Casablanca's Central Market, walk into the alley behind the market and have your fish oven grilled to perfection in minutes. For a fun dinner party -- purchase a selection of fresh, whole fish from your local fish monger. Have plates of fresh herbs, lemons, and garlic.  Invite your guests to stuff their own fish as they wish and pop them into the oven to grill at 450 degrees.  Keep an eye on the fish, as different species will cook at different times, depending on how thick they are.  Estimate 10 minutes per inch of thickness.