Hello, my parrot fish has a clear balloon looking bubble coming out of it anus area, it appears to have been there a few months but recently got bigger. He acts completely normal otherwise, I’m just wondering if there’s anything I should do. Also not sure if “he” is actually a female and this could just be a breeding tube? Nobody told me his gender when I purchased him so I have no idea but if someone could help me that would be cool!! Other info- he’s about 2.5 years old, alone in a 40 gallon tank. A photo of the “butt bubble” is attached.