gill cover

I have had my beautiful betta Sushi for about four months now! Having previous experience with bettas, I make sure that he is healthy and as happy as possible, but this morning I noticed that his right gill cover appeared to be slightly folded in on itself in the top corner in a way that exposes...

Hey everyone! I just bought my first betta yesterday. He was a "big chain store" rescue. I know...not the best idea, but he's here. When I first got him home and set up, he had a few curled fins, but they seem straighter today. He is eating well, swims up to the glass when I enter the room, and...

I had gotten a white looking male a week or so ago, and noticed more so when I got home with him that his gill cover on his face, or operculum, around the beard area, on his left side is half missing. I can see the redness of gill tissue underneath. His right side looks normal, but this left...