Clownfish lympho? Not sure.

[Crazeh]

Interested to know what people think of this issue on my clowns dorsal fin.

It's been there for a good 12 months and I always thought it was Lympho. Recently it's gotten more prevalent and closer to the body, so I'm questioning it again.

It behaves normally and feeds well, doesn't seem fussed at all.

No fighting with other fish.

 

[Jay Hemdal Verified Community Expert]

Interested to know what people think of this issue on my clowns dorsal fin.

It's been there for a good 12 months and I always thought it was Lympho. Recently it's gotten more prevalent and closer to the body, so I'm questioning it again.

It behaves normally and feeds well, doesn't seem fussed at all.

No fighting with other fish.

The length of time that has passed rules out the infectious diseases I know of. I wonder if it is a malignancy. I had a similar lesion on the face of a Cichlid. We sent it out for histopathology and it came back as cancer.

Jay