Sargassum Triggerfish with bump on one of his sides?

[matthias_bln]

Hi fellow reefers,

On Friday I got a new sargassum trigger, which is after a day of hiding out at about in the quarantine tank. While watching him, I discovered a bump on one of his sides. Could you guys help me diagnose what this could be? Initially I thought it's flukes, however a freshwater dip didn't do much (well, I think a few flukes actually came off, but nothing happened in regards to the bump).

Any idea what this could be?

Thanks!
Matthias

 

[Mastiffsrule]

Hey,

Great looking trigger. See if we can get someone to give a diagnosis

#reefsquad

 

[matthias_bln]

Bumping the bump