How does a fisherman know what size fish hook to use?

* The type of fish you're trying to catch. Fish have different-sized mouths, so the size hook you need will depend on the fish you're targeting. For example, you'll need a smaller hook for a trout than for a bass.

* The size of the bait or lure you're using. The hook should be large enough to hold the bait or lure securely, but not so large that it overwhelms it.

* The water conditions. The clarity of the water and the current will affect how visible your hook is to the fish. In clear water, you can use a smaller hook than you would in murky water. In fast-moving water, you'll need a larger hook to keep the bait from being swept away.

* Your own experience and preferences. Some fishermen prefer to use larger hooks, while others prefer smaller hooks. Experiment with different sizes until you find what works best for you.

As a general rule, it's better to use a smaller hook than a larger hook. This will help you catch more fish, because the fish won't be as likely to feel the hook and get away. However, there are times when a larger hook is necessary, such as when you're fishing for large fish or in fast-moving water.