So about 4 months ago I purchased a few blue green chromis from an online retailer, these fish unfortunately arrived carrying the parasite uronema marinum. Being new in the hobby, I had assumed two were hurt somehow - hence the mark up their side. One of these survived and did not contract the parasite. The fish has done well and about a month ago I purchased another from a retailer that I've come to trust more than the first. I noticed that the face of my oldest chromis was lighter in color than the new one; however, so was the rest of the body so I wrote this off as different collection sites and likely regional differences. I was looking closely at this fish again today and observed that most of his facial scales have come off. I've attached the best picture that I can manage and tried to add some contrast to aid in visualizing the lack of scales in the photo. Note that scale loss is from mouth to just behind the eye. This is roughly the same on the opposing side. I do not notice any changes in behavior, feeding, or interaction with the other fish. One one occasion I have seen the two blue green chromis fight momentarily but no sign of injury was noted immediately afterward. I have not seen any issues between the two since.
I'm concerned about the health of the fish and the rest of the tank. If anyone is familiar with this symptom and/or what it may be related to please let me know. I will try to keep this thread updated as any changes may or may not occur.
I'm concerned about the health of the fish and the rest of the tank. If anyone is familiar with this symptom and/or what it may be related to please let me know. I will try to keep this thread updated as any changes may or may not occur.