Weird particles/brook on triggerfish?

[Tnops]

Hello, I just noticed these particles stuck to one side of my blue throat triggerfish. I don’t really know what it is, might be brook but every other fish in the tank looks fine, including the clowns. Still attacks food viciously and nothing extraordinary about its behavior other than swimming near the top of the tank. (I QT every fish for 30 days in copper power)

 

[vetteguy53081]

Hello, I just noticed these particles stuck to one side of my blue throat triggerfish. I don’t really know what it is, might be brook but every other fish in the tank looks fine, including the clowns. Still attacks food viciously and nothing extraordinary about its behavior other than swimming near the top of the tank. (I QT every fish for 30 days in copper power)

Not brook, may be lymphocystis but also appears as ich. While I suspect lympho, to rule out ich - check again in another 24 hours and see if there are added dots