My female barbus had swollen anus (about 5mm) for about a week, and she looked like she was about to explode. She hid all the time, but came out to eat. Then one day, I noticed she suddenly shrunk, and she is ok now.
My other fish has red vent now, what could it be? Worms?
My other fish has red vent now, what could it be? Worms?