Weird Fungus

[fishfishfish]

my male zebra obliqueden has a strange black thing on one of his sides.well then i recently noticed my red top zebra female had some on her too.i just got back after a week or two to find that it has spread on the obliqueden to a larger size.
what could this be and how should i fix it?

 

[mark7616]

Try dosing with pimafix.

 

[fishfishfish]

could i treat my whole tank?i also have synos.would i be able to still treat it with them in the tank?

 

[mark7616]

Yep just remember to take out the carbon