Yes, it is one of the better mainstream choices. Nitro-V's nitrogen addition gives it corrosion resistance comparable to steels with far more chromium, and its toughness is unusually high for a stainless, with reported Charpy figures of 25 to 30 ft-lbs at 61 HRC. Both matter more on a boat than raw edge retention does.
Saltwater, blood, slime and a knife that lives in a damp bag. Corrosion resistance is the first requirement and it is not close. The second is toughness, because fillet blades are thin and flexible and a chippy steel in a thin blade is a bad combination.
Edge retention matters least, because cutting fish is not abrasive work and most anglers touch up between trips anyway.
The nitrogen addition is disproportionately effective against pitting, which is the specific corrosion failure that ruins marine blades. Toughness is a standout property of the alloy rather than a footnote.
It also sharpens easily on ordinary stones, so a touch-up at the dock needs no special kit.
Excellent corrosion resistance is not immunity. Rinse in fresh water, dry properly, and store the knife out of the sheath if the sheath holds moisture. See cleaning saltwater residue.
Our fishing category is small and deliberately so. Everything in it ships from Woodlawn, Virginia.
The full reference entry, with the published composition and hardness range and every listing we carry in it, is Nitro-V in the Steel Lab.