Black gums. Springs are the only salmon with black gums iirc. That's definitely a spring. Congrats on your first salmon! Therewill be many more :happy: :beerchug:
Lol. I remember my first. Me and my dad were trying our hands at coho. Had no idea what we were doing. I hooked into something big, and 30min later, reeled in a huge (especially to a 13 year old kid at the time) fish. It had the adipose fin, so I was trying to get the hook out. Some guy in boat yells, "that's a spring, you can keep that!" really? BONK! to think i almost let my first salmon ever go. weighed in at 37 inches long and 27 pounds.