It might be time for a new fillet knife

Accusharp 736C Fillet Knife with Two-Step Carbide-Ceramic Sharpener

How to Sharpen Your Fillet Knife

Gerber Fishing Series Controller Salt Rx 10 inch Flexible Fillet Knife, Polypropylene Handle, Sheath with Built In Sharpening System

The Home Of Maxam Products

Gerber Gator Fish Fillet Knife 7 Full Tang, Sheath with Ceramic Sharpener

Wild Fish 7-Piece Fillet Set - Knives for Fishing: Fillet, Bait & Frozen Fish Knife with Sharpener, Cutting Board and Carry Case. - Yahoo Shopping

Kitchen Knife Household Fish Killing Knife Thickened Fish Back Fillet Knife Fish Chopping Knife Fish Scale Peeling Knife Scissors Knife Sharpener Cooking Utensils - Temu

Manual Knife Sharpener for Fishing & Hunting I Shop Chef'sChoice Model 4635 - Chef's Choice by EdgeCraft