Fishing Hook Sizes

When it comes to fishing hook sizes, everything factors into selecting the best size for your catch. The fish hook size is a crucial piece to consider as it maintains the connection to your catch. It needs to be the right size in order to hold your bait, catch your fish’s mouth and stay there.


The ability to read fishing hook sizes is an important yet simple consideration. It all comes down to measuring the gap (the distance between the hook and the shank). The larger the total size, the bigger the gap.


Fishing hook sizes are numbered from 32 (the smallest size) to 1 and then 1/0 aughts to 19/0 aughts (the largest size). To select the right fishing hook size, you need to look at various factors:

What type of fishing are you doing?

The type of fishing can affect your cast. For example, if you're fly fishing with a hook that’s too big, it'll throw off your cast.

Where are you fishing?

The amount of debris found in the water, the clarity of the water and the speed of the current all factor into the fish hook size. A hook that's too small may be unnoticed by passing fish if it's surrounded by submerged sticks and leaves.

What are you trying to catch?

The fish you're trying to catch is one of the most important points to consider. A fishing hook size that's too large may never catch in the first place.

What type of lure are you using?

Without a properly secured lure, it will be difficult to catch the interest of fish.


Because every style of fishing is different, choosing your fishing hook size is crucial. Consider these points for the following styles:

Fly Fishing

Your fly fishing hook size is dependent on your lure. If you're using a larger jig, aim for the larger gap size. Some lures will extend upward above the eye of the hook, so it's important to make sure it's seated properly.

Bass Fishing

Bass fishing hook sizes range between 1, 1/0 and 2/0. The smaller size is perfect for worms around 6 inches, while the larger is better for 8-inch worms or 6-inch lizards. Using those baits, your bass fishing hook sizes will also hold a fish capable of eating the bait.

Deep-Sea Fishing

Deep-sea fishing calls for large aughts. For instance, a 9/0 is ideal for catching yellowfin tuna and many other fish found in the ocean.

Pro tip: Always carry multiple sizes with you in case certain fish aren't biting. You may decide to change your target after realizing others are in the area. 

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