Mysterious disease on Pseudomugil Ivantsoffi?

[Kyles_Aquarimetrics]

Hi all, I have a Pseudomugil Ivantsoffi that has developed a blackening of the scales on one side that seems to be spreading to its dorsal fin. It's behaving normally otherwise. Please see the image attached (it's that blackening in the middle that looks like ink). I have never seen something like this, so I just have the poor thing soaking in salt in a quarantine tank while I think of any other treatment options. Water parameters in the tank it came from and the QT are fine. My best guess would be some sort of stress induced thing as there is an aggressive Ivantsoffi in its tank. Thanks in advance.

Kyle

[MAC]

I have no idea what this is, hopefully someone will come along that's got a better idea. Is the blackening happening on the scale itself like an injury or underneath the scale like a hemorrhage? 

 

 

[Colu]

Blackening of the scales.is usely caused by an injury or ammonia burn 

[Kyles_Aquarimetrics]

Thanks all. Looks like it's directly on the scales. No ammonia in the tank, so may have been that aggressive one in the other tank as it came on quickly about a week and a half ago. Guessing salt/wait is the only treatment?

[Colu]

 I would Treat with aquarium salt 1 table spoon for 3 gallons for 1week

[Kyles_Aquarimetrics]

Cool, will do. Thanks!