Scott, I have no freaking clue. I'm still learning how to properly identify musky via BigBluegill.com from those who catch them constantly. I study their behavior patterns, habitats, but based on visual and recorded information. Identifying the sex, I'll leave that for the veteran anglers and specialists at the fisheries to identify. Me, when I catch a legal musky, it's dinner, after the pics, measurement, and weighing. Otherwise, it's my meal.