Mustard tang ragged fin

[Wildreefs]

I will try and get a photo tomorrow when the lights are on. I picked up a mustard tang today and while at the store , I realized his back tail fins were serrated, almost like someone took those special zig zag scissors, and made them uneven. He ate everything in the store, and even when I got him into qt.

Not sure how I didn’t pass him up when I noticed. Hopefully it’s fighting from another fish while there, but if it is fin rot, or bacteria infection, is this usually a killer?

 

[Old Fritz]

it can be from fighting or shipping. If you have bad water it could cause an infection

 

[bigpaul]

It was probably being nipped by another fish at the lfs.