Fishing Hook Sizes and Types [2021 Update]

Selecting the best sized fishing hook for your target fish species and having a high quality steel is one of the best decisions you can make to catch more fish.

I can’t count the number of fish I have lost due to using the wrong size and getting my hook straightened from low quality steel. It is an experience I don’t want to repeat again. That is why I always put a lot of effort into selecting the best possible fishing hook for the situation.

This article is designed to answer all of your fishing hook questions – from the different sizes available and the different types of hook. By the end of this article you should have a much better understanding of which hooks you should be using.

Let’s go!

Understanding Fishing Hook Sizes

Hook sizes are famously confusing. This is because they initial start with a high number with reducing numbers indicating larger sizes, but when you reach size #1, it reverses and larger numbers indicate larger sizes.

Anatomy of a fish hook

It can be confusing but there are a few ways you can simplify it to make sense by splitting the numbering system into freshwater and saltwater hooks.

Freshwater Fishing Hooks

The smallest hook you would ever consider is a size #22 hook, which is absolutely tiny and is used for tying flies. As the size goes down the hook gets larger – up to a point! When you get to a size #1 hook, it begins to reverse and larger numbers become larger hooks.

Saltwater Fishing Hooks

Once you get to a size #1 hook, then the next size up is a size #1/0 hook, then a size #2/0 hook and so on. This can become confusing very quickly.

Most anglers refer to size #1 hooks and smaller as being freshwater hooks and size #1/0 and larger as saltwater hooks.

The largest hook is a size #10/0 which is suitable for big gamefish and sharks.

Recommended Fishing Hook Sizes for Different Species

The size of hook you choose should be based on the size of your bait first and the size of your target species second, but we have made some simple recommendations to get you started.

  • Size #22 – Flies 
  • Size #12 – Bluegill
  • Size #8 – Trout
  • Size #6 – Bream
  • Size #4 – Carp
  • Size #2 – Flathead
  • Size #1 – Salmon
  • Size #2/0 – Bass
  • Size #4/0 – Coral Trout
  • Size #8/0 – Kingfish
  • Size #10/0 – Sharks and big gamefish

The final comment on fishing hook sizes is that different manufacturers will have slightly different shank lengths even when comparing the same hook size. Keep this in mind when looking at which hook to buy.

This video by BadAngling gives a great overview of the different fish hook sizes and shows the different shank lengths and gapes.

Barbed vs Barbless

Another difference between hooks is whether they contain a barb on the end of the hook. The advantage of the barb is that the hook is much more likely to get stuck in the fish’s mouth, although they have fallen out of popularity over recent years.

Many locations have banned the use of barbed hooks because they cause more damage to a fish during removal even when catching and releasing.

Barbed hooks also take a long time to rust away if the line breaks and the hook gets left in the fish’s mouth. Stainless steel hooks will take a very long time to corrode away so be extremely careful when using a stainless steel barbed hook.

7 Types of Fishing Hooks

1. Bait Hook

Bait hooks are the most commonly found type of hook. They often have barbs attached to the shank to help keep the bait in place.

They are extremely versatile and can be used for most types of fishing. You should certainly have a variety of bait hook sizes in your tackle box at all times.

Bait Hook


Small barbs attached to the shank help to keep your bait in place. Using a bait hook means you will lose less bait to fish nibbles or hitting structure.


The barbs can do a lot of damage to the fish when swallowed whole and when removed from deep in the fish’s gut. You should only use a bait hook when you intend on eating your catch.

When to Use?

A bait hook is a popular type of fishing hook and should be used when using bait and not following catch and release. They are very versatile and can be used in most situations.

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2. Circle Hook

Circle hooks are easy to identify based on their shape. They have become increasingly popular in recent years and are mostly used with live bait.

The circle shape means the hook is unlikely to accidently hook the fish deep in their gut and will only strike on the inside of their lip. Circle hooks are very popular with fishing competitions. 

Circle Hooks


A circle hook reduces the risk of gut hooking deep inside a fish. This means the fish will be healthy especially if you are intending on catching and releasing.


You cannot strike when the fish bites as you will pull the hook out of the fish. Instead you have to apply a steady pressure to keep the hook in the side of the fish’s mouth.

When to Use?

You should use a circle hook when fishing with live bait of when the wellbeing of the fish is paramount.

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3. Treble Hook

Treble hooks have three hooks in the one package as the same suggests. They are primarily used for lures, crankbaits, or jerkbaits.

Some poor quality lures come with poor quality treble hooks and you will want to change them out before using them. It is always wise to keep a few extra treble hooks in your tackle box.

Treble Hook


It does not matter from which direction the fish bites your lure, one of the treble’s hooks will be pointing the right way. 

The treble hooks are also very strong and are more suited for large, powerful fish.


Not particularly versatile and are banned in some locations. Check with your local authorities about whether you can use a treble hook.

Treble hooks can also be difficult to remove as the second point can jab the fish the instant the first one is released.

When to Use?

Treble hooks are used primarily when attached to hard body lures or crankbaits.

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4. Octopus Hook

Octopus hook’s have a curved shank which are on the short side. They are primarily used when bait fishing. Due to their short nature they have a very low weight when compared to the other options.

Octopus Hook


Low hook weight and smaller size. Octopus hooks present the bait more naturally as there will be less steel visible.


They are similar to a circle hook in that the hook can be pulled out of the fish’s mouth if you strike too heavily. You will need to adjust your striking technique accordingly.

When to Use?

Bait fishing when using worms, leaches, and maggots

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5. Jig Hook

Jig hooks have their eye set at 90 degrees to the shank which allows the lure to move through the water.

Jig Hook


They provide the most effective design to attach a hook to a plastic jig or lure. This gives the lure maximum movement and attracts more fish.


Jig hooks are not very versatile.

When to Use?

Jig hooks are exclusively used when attached to a lure or jig.

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7. Weedless Hook

A weedless hook has a plastic weed guard which is attached from the hook to its point. This is designed to prevent light weed from getting snagged onto the point while being flexible enough that a fish will be able to bite past it.

Weedless Hook


Less likely to get covered in weed when fishing around weed beds, sea weed, or sea grass areas.


It can be a bite more annoying to fish with as you may have to re-attach the weed guard if it gets dislodged after casting.

When to Use?

Weedless hooks are a favorite of bass fishermen and should be used when fishing in lakes with heavy vegetation.

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For such a simple topic, there is a lot to know about fishing hooks. There are dozens of other types of hooks that we haven’t even mentioned like egg hooks, mosquito hooks or offset shank hooks – but these are for more specialist types of angling.

For a beginner you will likely be able to narrow down your hook purchase to the most popular styles and three different sizes to give you enough flexibility while on the water.

If you have any wisdom to share from your own experience then please leave a comment below – we are always keen to hear from our readers and learn from you.

What is your favorite hook?

Happy fishing!

Last update on 2021-08-01 / Affiliate links / Images from Amazon Product Advertising API

Russ Egan

Russ is an avid angler. He has fished all over the world, primarily for Saltwater game fish but also for local prize fish. Russ writes reviews for all of his fishing gear to help others achieve their own fishing goals. His favorite reel is a Shimano Tyrnos for an overhead reel or a Shimano Curado for a baitcaster. His dream is to catch a Black Marlin.