I have a question about my moray eel. He was a very aggressive, territorial, active eel. Then About 3 weeks ago he freaked out. Swam about 100 miles an hour at the top of my tank, back and forth about 5-6 times. Then went under the rocks and hid. Wouldn’t come out. Would only eat if food was dropped around him. The last few days, he has slowly started to come back out like he use to. All of a sudden, he freaked out again last night, swam 100 mph back and forth and went to hide in the rocks. He didn’t eat at all. He lays on his side underneath hidden. Does anyone know what is happening to my eel???? Please help.