I was siphoning some food off the bottom of my tank and my new betta darted in the path of the siphon and got tangled, then sped off immediately. When I was done I noticed he had a scrape from his back all the way down his side, where those scales are missing and just scraped. He's still swimming around and flaring and seems ok, and I put in a bit of AQ salt and stress coat immediately. Has anyone else had this happen and will that kind of thing usually heal up?