Clownfish with grey fin edges and white cluster lumps on belly

[Perth]

Hi, Can someone help me with my clownfish. He has grey edges to one side and one bottom fin and small white bubble like lumps on his belly. At first I thought it was where my other (dominant) clownfish had nipped him and the fins where battle scars and the bubbles ruffled scales but now I think it's more serious than that. I have attached a photo. Both clowns have been together for about a month, this one is much smaller than the other, and is swimming and eating fine. I think the area covered in the bubbles is growing though.
Any advice would be great.

 

[Deinonych]

Looks like lymphocystis to me.

 

[Nina51]

same for me. lympho is a virus, there is no real treatment other than keeping your water conditions pristine and soaking food in selcon and/or vita-chem. it takes a few weeks for it to run its course but it should go away on its own.