Don't see a kok yet. Does look like a male fish though. I'd give it some time. Looks like a low-grade FH, might not have the right genetics to grow a big one. They all get some sort of kok though if dominant in the tank.
Yeah to be fair I paid very little for it, i had been waiting for one to come into the pet shop for ages and they finally brought one In so I grabbed it. It was only about an inch when I got it. It’s in a tank alone aswell thanks