My husband is an avid fisherman, and we have been through our share of fillet knives.  The Pro 7 inch Fillet knife is in a class of its own.  The special formula steel is so durable that it can withstand the flexibility needed to skin trout, blue fish and get through and around all the soft bones.  Really like the one piece construction and the full tang which makes it so durable.  Looking forward to many years of use.