Hi all, I am posting for the first time here, need input from the pros. A couple of weeks ago I noticed that the tail of my axolotl Lotya developed thicker whitish ridges along the edge of his tail's fins, both at the top and the bottom (see attached picture). They almost look as if the edge has folded on itself and got stuck this way. He has been a bit sluggish lately but has not lost interest in food. Question is, should I be worried? Is this something related to nutrition or illness such as fungus or bacteria? Has anyone seen anything like this? Any help will be appreciated.
(Lotya is about 10 months old (got him in May from a breeder as a juvenile). I feed him mostly soft salmon pellets we got from the same breeder. Water temperature has been a bit on the warm side lately (20-21 C) but I turn on AC to cool it down and have an IceProbe chiller installed on the top.)
(Lotya is about 10 months old (got him in May from a breeder as a juvenile). I feed him mostly soft salmon pellets we got from the same breeder. Water temperature has been a bit on the warm side lately (20-21 C) but I turn on AC to cool it down and have an IceProbe chiller installed on the top.)