Fish hooks are small, pointed devices used in fishing to catch fish. They are typically made of metal and come in various shapes and sizes, designed to hold bait and penetrate a fish's mouth when it bites. The sharp point and barbed design help keep the fish securely attached to the line. Fish hooks can be categorized into different types, such as jig hooks, circle hooks, and treble hooks, each serving specific fishing techniques. Anglers choose hooks based on the type of fish they are targeting and the fishing method they are using, ensuring a successful catch.