I have a tire track eel. Ive had him for a couple of months, he was eating a mixed diet of frozen blood worms, salad shrimp, and earth worms. then about three weeks ago he stopped eating out of my hand. I started laying the food on the bottom of the tank and he would eat it. Now for the last two weeks he wont eat at all. Ive tried everything to get him started again. Beef heart, shrimp, frozen blood worms, frozen brine shrimp and no luck. Any Suggestions would be great