u/IssueRich5094

Not sure what’s going on with her. I’ve had her about 5 years. I had a larger group and over the years have lost some. Down to 1 male and 1 female. The female lately has been swimming under the filter, rarely comes out. Kinda looks like she looses balance at times? She does eat and I’ve seen her poop a few times. It looks like her left fin is smaller than the other? Shes also a strange shape- always has been. Everyone else in the tank acts totally fine. Water parameters are fine. Anyone have any ideas?