What disease is this?

[Discomafia]

http/ovas.ca/bridge/phpBB/download.php?id=815

 

[beblondie]

Looks like a problem known as Nodular disease.Isolate it from other fish asap there is no treatment known at this time its caused by various mirosporidians and myxosporidian parasites-Anne

 

[Discomafia]

Thank you beblondie.