Lyre tail Anthias mouth stays open and he's breathing rapidly. This has been going on for a few days but I've noticed flare ups before, he would open his mouth wide for extended periods of time and let the cleaner shrimp into his mouth like a doctor would at a check up. Thought it was cute at first but now he seems to be struggling. His swimming pattern changed he's been lethargic. He tried to eat but the food falls out of his mouth most of the time. 2 months ago he had a bulge on the side of his mouth that went away after a day. No other fish has any disease or signs of infection. All fish and inverts went through extensive quarantine. Never any ich or velvet in the tank.