snail and betta... scraping injury
I had posted pics in the emergency section a week ago, my betta was missing a bunch of scales on his head. At first I thought it was fungus but it was just what fish skin looks like when the scales fall off.
The only thing I could attribute it to was that I had put a snail in with him last weekend. He immediately was nipping at it and harrassing it. I'm wondering if he scraped himself somehow, either on the outer shell or the sharp part of the shell where the snail emerges. I removed the snail to the other side of the divided tank and the betta's head has almost healed.