Kole tang help

[JustinMN18]

Hey everyone, two days ago I noticed some very small looking "particles" on my kole tang. Yesterday I didn't see them, and last night I saw them again. This morning with the lights off, I got these pictures.

This is my first saltwater / reef tank, and I have no idea if this is ok or if it's a problem. I'll keep an eye on it today, but he has been eating and swimming totally fine. Corals and other fish seem fine.

Picture was taken with no tank lights on, and flashlight mode on my phone so I wasn't flashing the tank. Tank is about 1.5 months old, and I've had the Tang for about 2 weeks. Everything from LFS and all quarantined (they say) at the LFS.

 

[vetteguy53081]

Appears to be crypto or flukes.
To eliminate fluke possibility, give fish freshwater dip for 3-5 minutes and look at bottom of container for what looks like sesame seeds. If you see some- flukes
If not- prepare to treat with copper based treatment

 

[Qasimja]

those spots are ich parasites most likely

 

[Jay Hemdal]

As vetteguy said, this could be ich (Cryptocaryon) or flukes. Normally, ich shows as tiny white spots, like grains of salt. In some fish though, there is a generalized skin reaction, and you get this sort of halo effect. Is the fish scratching on surfaces?
Trouble is, with invertebrates present, you are limited to what treatment you can use. First thing to do though, is a FW dip to rule out flukes, like vetteguy said. You may need a magnifying glass to see them, unless they are Neobenedenia, those you can see unaided.
Jay