"Kershaw 1242GEX 9"" Curved Fillet"

From Kershaw:

The 9-inch Curved Fillet is ideal for most saltwater fish, large freshwater fish, and a variety of game. It excels at helping you break down fish and game into more manageable sizes. Use it to fillet larger fish, too. The curved blade’s length enables you to cut all the way through and gives you the full range of motion needed in order to make a clean cut. It's great for processing wild fish and game, but many chefs also choose this larger breaking knife for processing meat in their own kitchens.