An outdoor fillet knife is a type of knife that is specifically designed for filleting fish, typically used by anglers and fishermen.

Outdoor fillet knives are built with sharp and flexible blades that make it easy to cleanly fillet fish. They are also designed to be durable and resist corrosion from exposure to water and other outdoor elements.

Outdoor fillet knives can be used to fillet almost any type of fish, from small panfish to large saltwater species like tuna and swordfish.

To keep your outdoor fillet knife in top condition, it's important to clean and dry the blade after each use. You should also periodically sharpen the blade to maintain its cutting edge.

While outdoor fillet knives are primarily designed for fish filleting, they can also be used for a variety of other cutting tasks, such as trimming meat or vegetables.

Outdoor fillet knives can have either fixed or folding blades, and the blade itself can be straight or curved, depending on the user's preference.

The length of the blade on an outdoor fillet knife can depend on the size of the fish being filleted, but a common blade length is between 6 and 9 inches.

Most outdoor fillet knives come with a protective sheath to cover the blade when not in use. Some models also come with belt loops or other attachments for easy carrying.

While there is a bit of a learning curve to effective fish filleting, most outdoor fillet knives are designed with beginners in mind and can be easy to use with a little practice.

While outdoor fillet knives are primarily designed for fish filleting, they can also be useful for other outdoor tasks, such as hunting and camping food preparation or even emergency first aid.