Best 4″ Fillet Knives Buying Guide – Top 5 Knives Review

Finding the best size fillet knife is a little bit difficult and fishermen require such fillet knives which help them for the process of their hand earn catch. 

No one wants to rip their fresh fillets to fragments, and there’s no infallible way to do this thing without an inferior blade. The best 4 inches fillet knife should be durable, easy to sharpen, flexible and plenty of grip.

All these features are not our recommendation, they are necessary in every fillet knife for best filleting a fish.

Being a fisherman I spend most of my time, energy, and money outside to experience and find the best fillet knife for small fishes. 

There are alot of best small fillet knives available for choose, these small fillet knives are specially designed for work with mini fishes. I proceeded and cooked many fish for the whole year and found that having the best fillet knife gives you a good reputation in the world. 

Here I am going to describe the best 4 inches fillet knife in the current market for various users.

Most Recommended

Best Overall Choice

Rapala fish n fillet superflex 4 inch

Fish n Fillet Super Flex 4 Inch

Best Premium Choice

Rapala 4” Bait Fillet Knife

Rapala 4” Bait Fillet Knife

25 FILLET KNIVES CONSIDERED

66 HOURS OF RESEARCH

5 FILLET KNIFE
SELECTED

Best 4 Inch Fillet Knives Review 2023 Comparison Table

Image Product Details   Price
Rapala fish n fillet superflex 4 inch Rapala fish n fillet superflex 4 inch Blade Material: Stainless Steel
Brand: Rapala
Color: Brown
Handle Material: Stainless Steel
Item Length: 11 inches
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Rapala 4” Soft Grip Fillet Knife Rapala 4” Soft Grip Fillet Knife Included Components” Fillet Knife, Sharpener, Sheath
Brand: Rapala
Department: unisex-adult
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Ultra Source Boning Knife Ultra Source Boning Knife Blade Material: High Carbon Steel
Brand: UltraSource
Color: Flexible Blade
Handle Material: High-carbon,Polypropylene Handle,Steel
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Rapala 4” Bait Fillet Knife Rapala 4” Bait Fillet Knife Brand: Rapala
Model Name: RSB4
Special Feature: Stainless
Age Range (Description): Adult
Included Components: Fishing Tools
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South Bend 4” Fillet Knife South Bend 4” Fillet Knife Recommended Uses For Product: Fishing,Outdoors,Outdoor
Brand: South Bend
Model Name: 5703-0139
Special Feature: Stainless Steel Blade
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Rapala fish n fillet superflex 4 inch

Rapala fish n fillet superflex 4 inch

The rapala 4 inches fillet knife is incredible for filleting a fish, it has a thin and flexible blade which provides you control on fish while filleting it. The Rapala fish n fillet superflex 4 inch knife is coated with non-stick PTFE which allows easy cutting without any effort. A hand-ground stainless steel sharp razor blade provides a smack  construction. Most people like it because it comes with polished brass ferrules and tooled leather sheaths.

Features :

  • Made with non stick material
  • 0.20 lbs in weight
  • Available in brown colour
  • 12×0.20×2 inches in dimensions

Pros

  • Have a backed birch handle which removes the water and prevents cracking.
  • Come with genuine leather sheath and scabbard constructed insidely.
  • Available in various sizes : 4”, 6” and 7-½”
  • Have a classic fillet knife stylish look.

Cons

  • None

Final Verdict:

The rapala fish n fillet knife is a great small fillet knife, it is very attractive to the eye and works as well as it looks. It makes it easy to slide the fillet right off the skin because it comes super sharp from the factory. In my verdict, it is highly recommended as I have cleaned many fishes with a rapala 4 inches knife without sharpening it.

Rapala 4” Soft Grip Fillet Knife

Rapala 4” Soft Grip Fillet Knife

Rapala 4” Soft Grip Fillet Knife has become the preferred fish in the world for many years. It has a soft grip which combines the great rapala flexible blade with a non-slip handle for providing comfort to users.

The super sturdy and sharp blade can cut through the bone structure and skin of fish in limited time. The double tapered blade provides directional stability and strength when you are working with some unmatched delicate situation.

It also has an enlarged finger guard which provides safety to your hand when you are filleting a small fish.

Key Features :

  • Thermoplastic soft grip handle
  • Finger guard
  • Stainless steel sharp blade
  • Long lasting cutting Edge – Double taper blade
  • Black sheath with belt loop
  • 4” blade length
  • Texture finishing grip

Pros

  • Equipped with a flexible rapala stainless steel blade with a non slippery handle.
  • Easy to use moulded handle
  • Provide enough control and comfort while filleting a fish.
  • Come with black sheath that allow you to carry it with your belt
  • Single stage sharpener keeps your blade’s performance maintained. 

Cons

  • None

Final Verdict:

Welcome to fillet fish world with any small fillet knife where you can choose, as long as a 4 inch Rapala. I also have this one in my kitchen – a perfect “boning” knife. I use it in my travelling sailing/fishing bag, and one on the boat. 4 inches is the perfect size fillet knife unless you’re making big fishes like sashimi out of a 600lb tuna – good for outdoor tours.

Ultra Source Boning Knife

Ultra Source Boning Knife

Ultrasource fillet knife is a high grade knife which is manufactured by ultrasource. It is designed for your comfort while filleting a knife the whole day, it can also be used for butchers, meat processing and other works related to the fish industry.

Ultrasource fillet knives are made with high carbon molybdenum steel, that is why these knives are ideal for breaking a large part of the bones of fishes into small pieces and making them ready for cooking. It has liquid welded ergonomics where the sharp blade meets to composition of handle for easy cleaning andmantaince.

Both blade and handle are well balanced which reduce the chances of slippery and hand fatigue and make sure the safety in the whole filleting process.

Key Features :

  • Alloy Steel blade material
  • Semi flexible
  • Use high quality molybdenum for manufacturing
  • Front and rear bolsters provide protection for slippery.

Pros

  • Perfect strength, lifespan and edge retention
  • Comes with non-slip and ergonomic handle
  • Not only use for fillet knife but it can be used at butcher shop for meat processing

Cons

  • Handle too short

Final Verdict:

Nice and comfortable fillet knife. It is a well made knife which I have used for the last two years. Ultra Source is often compared to the other cutlery which is a present in most commercial places like restaurants. Like other other quality knives, its edge is fully maintained by honing at a right angle. Don’t waste your time or money just buy Number 1 selling knife knives. Highly recommended.

Rapala 4” Bait Fillet Knife

Rapala 4” Bait Fillet Knife

Rapala 4” Bait is a 4” fillet knife having a 4”/10 cm sharp and serrated blade. It is mainly used for making a heckle and other seafront tasks. Rapala 4” inches fillet knives have no folding parts or hinges which make the cleaning process very easy for users.

Due to the small length of blade, this knife is good for cutting, stripping and praying. During the manufacturing process some chromium is mixed with carbon steel in order to make a stainless steel blade which can resist corrosion and  enhance their performance level.

Key Features :

  • Ergonomic
  • Great value for money
  • Sturdy
  • Durable and Flexible
  • Sharp edges

Pros

  • 4 inches stainless steel blade
  • Come with finger guarde
  • Easy to clean and use
  • Have open sheath
  • Come with serrated upper blade
  • Have moulded grip handle 

Cons

  • None

Final Verdict:

It’s a cheap fillet knife. When I bought It, it was not sharp enough for filleting but some swipes with a pocket sharpener attached to it. I will expect to use it up often. But for cutting bait and bleeding a fish, it does an amazing job. It is not going to take the place of a fillet knife. The blade cover is secure. It fits into a bag or box easily. I am very happy with it and would like to rate it 9 out of 10.

South Bend 4” Fillet Knife

South Bend 4” Fillet Knife

It is an ideal fillet knife for different sizes of fish. It can be used for panfish to large freshwater and saltwater game fishes. You can use its blade to other gear with no time. It comes with a leather sheath which gives storage while carrying it.

Beside this, it also has an ergonomic handle which is textured for comfortable and strong grip even if you are using it in wet condition. It is a stainless steel knife and made with durable and flexible material to increase their corrosion resistivity.

The south bend 4” fillet knife provides a precise cutting that’s why it is mostly used for panfish. It is long lasting product that you can easily place in your pocket without any danger.

Key Features :

  • Perfect Fishing Tool
  • Versatile use
  • Durable material
  • Sensible dimension
  • Performance driven product

Pros

  • Come with sheath for protection
  • Made with sturdy and strong material
  • Stainless steel knife
  • Can be use for any size of fish
  • Corrosion resistive

Cons

  • No

Final Verdict:

I would like to go as far as to call it a real fillet knife. The south bend 4″ fish fillet knife has indented edges similar to a steak knife which allowed me to use it for filleting my fish. It is really handy to cut the fib bones and shoulder bones out of the fish but you should not purchase this fillet knife for fish skinning.

Conclusion

With a lot of options for prices and quality regarding high quality 4” fillet knives, we have provided most demanded fillet knives in the above section. All of them are worthy in quality but cheap in prices. These knives can be used by consumers for life time if they properly take care of them.

Selection of knives depends upon the user’s requirement. For my opinion I will recommend a  Rapala fish n fillet super flex 4 inch first because this is the best 4” inch fillet knife for one time investment. I also recommend that you should invest in a high quality blade instead of buying new one every month.

Furthermore, I tried to cover each and everything about the best 4” fish fillet knife but still if you have any question regarding the blade or knife then please don’t hesitate you can contact us.


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