I am so glad to have quarantined this new fish, it's a skunk grouper and it has a new patch? It looks bacterial but I can't tell properly, I have it with my large sailfin tang in a 10 gallon as quarantine, it wasn't coming out of the pvc pipe even after a day so I was worried and booped it out to check on it, i currently have ruby rally and powdered praziquantel aswell as tablet form metronidazole, he also seems to be breathing a bit faster than usual, if brighter light is required I can send better vid/picture