Hello, I got my beta about two months ago, and this past Saturday (now Monday) I was out and when I came back later that night I noticed that my betta's gill looked as if it had been torn. I'm not sure, but it looks like he might have been flaring too much and maybe caught his gill on something...? (The light in his tank was on and the light in my room was off causing a reflection which normally I wouldn't allow, and haven't since).
Other than that, he has been acting completely normal, and eating like a little pig as usual, and I did a 100% water change on Sunday (which I do weekly).
Here are two pics (sorry the first is blurry)
The red is his coloring and doesn't appear any different now than before (as in nothing I can identify as bleeding)