salt fish

Dear friends I bought this scopas tang 11 days ago and move him to qt tank, today i see some sign of illness(black circles) that visible in pic, how can i afford this? qt tank 40 litr Salinity 1.026 Temp 28 Thanks

Well, I've been "encouraged" to introduce myself. Marlin here from Seguin Tx. Been doing aquariums since 11 years old, that is saying a lot considering I'm a little older now. That means fishkeeping for about 50 yrs. Mostly fresh with a little dabbling in salt on occasions. Recently wife...