I have posted last week and in this tank was a jaw fish that died 2 days after arrival . Current occupants are possum wrasse , Randall goby , fire fish . The neon goby and Pygmy file fish ORA captive all other fish from ( saltwater fish .com) Unfortunately I did not start dosing metro and kana until tonight Sunday ….jaw fish died on Friday and and all fish were eating doing well , except jaw fish . I was away on 3 day trip and noticed when arriving home today pygmyfile fish has swollen mouth. I hope this medication is not too late and can help , fish ate yesterday for my wife while I was away but not today.