Parker,

This actually has little to do with your skills. If you took this photo with a digital camera there is no way you would have been able to get a good picture of the head in this light. The digital camera just doesn't have enough range to cover the bright jaw to the black mouth. So what it does is turn the black to grey. I copied the picture to my machine and then adjusted the contrast and birghtness a bit and the mouth is definitely BLACK.

If however this was scanned from a slide that would be a totally different story.

No matter what that is a great fish that I would love to have caught!