Looks like the one I posted a few days ago. No one knew what it was. If you have a refug. put him in there. I tossed mine as I don't have a refug and when I tried to feed him meat he ate it. So I figure he was not reef safe. His claws look pointy
Here is the thread on it w/ pictures https://forums.saltwaterfish.com/t/200806/while-i-was-trying-to-catch-my-firefish-i-found