Trigger fish white lump on left face fin

Hi Guys

My trigger fish seems perfectly happy. He's eating normaly, sleep sin his fav spot every night, plays with the clowns and tangs.

Now i have noticed this white lump,on his left face fin, I have no idea what it is, at first i thought it was a bit of prawn stuck to him. But it since has got bigger.

I have attached a photo, its not that clear, I try and take a better one tonight. Any ideas on what it could be.

Also have a look at my youe tube video, when he comes out behind the rocks you can see the white lump.
YouTube - Marine Tank Part 1



Many thanks

jon

 

Its GonaHerpaSiphiLaids, give him a shot of penicilin and tell him to stop being a slut. hahaha no just kidding I really have no idea. But I have a Picasso trigger at my work that has a similar white lump in the center of his tail fin. His is smaller and he seems like he is in perfect health but has this one random wht spot that wasn't there when we got him. At first I thought it might be the onset of ich, but never spread. The only other thing I could think it would be, would be the start of fin rot. But I hohestly have no idea, just guessing. Sorry I can't be of more help.