I have been a hoobbyist for 8 years. My newest tank is 180 FOWLR with 20 gallon sump setup for a liitle over a year. I have had this Violiton lionfish for 7 months, he is about 8 in long. all of a sudden for the past 4 to 5 weeks he cannot open his mouth to eat. He eagerly tries but when he goes to strike at food his mouth will not open. I have also tried live ghost shrimp at night, he goes for it but nothing happens. I really do not want to loose this fish. I can't believe he is still alive. He still swims around still with energy and is very well mannered, doesn't bother tankmates or myself when cleaning. I have done web research and have ask everyone locally and have even tried to talk with public aquariums, no one can figure it out.....Can anyone HELP
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