I' d recommend either an older Buck. I have a 15 to 20 year old Buck fixed blade 5" that is great. But my current knife of chioce is the Kershaw Alaskan blade trader. Very shape holds and edge great and I have had very good luck with it. If you don' t want the gut hook/skinner blade they have other options including the hunter trader. I just like mine and would feel comfortable taking it anywhere to go hunting with.

http://www.kershawknives.com/huntfish.htm