I recently acquired a 15" black laced moray eel. My questions are: what is the best food to feed her and how often should she be fed? Raw shrimp does not appeal to her, neither does dry food - she readily eats raw meat but she does not seem to be able to digest it properly. Waste food fouls the water readily (she is in a 225 gallon tank). Any ideas? Her prior owner said she ate shrimp readily but I don't believe it. Is the strategy to feed her once or twice a week and then plan a water change?