10 Best Fish Fillet Knife 2025 in the United States

The Mercer Culinary Millennia fillet knife features a narrow 8.5-inch high-carbon steel blade that holds a sharp edge well, ideal for precise fish filleting. Its flexible blade allows for easy separation of flesh from bones, making it particularly useful for delicate filleting tasks. The handle is crafted from Santoprene, a soft yet durable material, with an ergonomic design and textured finger points to provide a secure, non-slip grip—important when working with slippery fish.

Weighing just 4.6 ounces, the knife is light and easy to handle during detailed cutting. It requires hand washing and immediate drying to maintain its quality, as it is not dishwasher safe. The stamped construction offers a balance of durability and affordability, making it a practical choice for home cooks who want a professional-style fillet knife without a high price tag.

This Mercer knife balances sharpness, control, and comfort effectively. It is well-suited for those willing to provide a bit of extra care in maintenance but may be less ideal for users who prefer low-maintenance cleaning or need a stiffer blade for tougher fish.

The WORKPRO 12V Cordless Electric Fillet Knife is a solid choice for fishing enthusiasts who want an easy-to-use, portable solution for filleting fish. It comes with two razor-sharp stainless steel blades—an 8-inch flexible one and a 10-inch stiffer blade—covering a good range of fish types from small to large. The blades are durable and serrated, which helps in precise cutting. The rubber-coated handle offers a comfortable, non-slip grip, making it safe to use even when wet.

Although the product weight is around 4.8 pounds including batteries and case, the knife itself is lightweight (about 1 pound without blades and battery), so handling during filleting remains manageable. The cordless design, powered by two rechargeable lithium-ion batteries, allows about an hour of continuous use per battery and charges quickly within an hour, giving you nearly uninterrupted filleting time. A safety lock on the battery pack adds extra security during use. The included hard storage case is convenient for keeping everything organized and protected when traveling.

One consideration is that the slightly heavier overall kit might be a bit cumbersome for some to carry around, and the blade length is fixed with only two options, which may not suit very small or very large fish perfectly. The knife requires hand washing to maintain blade quality. If you want a reliable cordless fillet knife with good battery life, solid blades, and a comfortable grip, this model fits well, especially for casual to moderate fishing trips.