I’m in an argument with my step dad on this. I believe it’s a rainbow. He swears it’s a cutthroat.
I want to settle this.
First off, Welcome to the site. I’m going to move your post to the Utah board where you will get a lot more replies.
My guess, cutthroat but did it have a orange slash under the throat?
Cutthroat - remember any markings of a cutthroat is considered a cutthroat, the spotting, the redder fins, and even the tail shape all appear to be considered a cutthroat.
100% a cutthroat. Increasing large black spots near the tail, fewer spots towards the head, orange fins (rainbows are gray), and that small bit of red on the chin. That’s a cutthroat.