Ocellaris issue

[dpg]

Salinity 1.025
Calcium alkalinity mag 440, 9, 1000
210 gallon over 6 years old Lps/softy tank
Long nose hawk fish, purple and red firefish, starry blenny, yellow tang, leopard wrasse, Mandarin, diamond goby, royal gramma
Please advise...have had this guy for several months and he is paired with a female Ocellaris.
Mucus patches not too noticeable ,hovering near sandbed upright, not laboured breathing. image.jpg
Thanks