150 gallon red sea tank two years old no recent changes leopard wrasse has been in the tank almost 2 years pretty large has been doing very well fed the tank tonight. Noticed he was open mouth breathing, that a minute or so later resting on the sand turn on laying on his side on the sand. Occasionally would get up and swim around but then lay back in the sand. Other fish were coming around to take it vantage of him I guess so my plan was to put them in an acclamation box so he didn’t get picked on but now of course he went somewhere where I can’t find them. Any ideas what would cause sudden onset behavior like that? Anybody ever see anything like choking on food in a fish? All the other fish seem OK I’m watching very closely