Hi! My name is Jesse, I just got a new koi and put it into my tank and noticed some pink marks and slight shredding on its fins. Does this look like Fin Rot? Should I return/exchange it or try to treat it?
Thank you!

Screen Shot 2017-11-02 at 2.53.47 PM.jpgScreen Shot 2017-11-02 at 2.54.03 PM.jpgScreen Shot 2017-11-02 at 2.54.18 PM.jpg