Not exactly what you want to hear, according to the Book Marine Invertebrates by Ronald L. Shimek, Ph.D, Pg 375. ISBN: 1-890087-66-1
"Natural and nessasary diet unknown. Appears to eat and acsept meaty foods, but seldom survives for more than 18 months. Appears to die of Malnutrition"
Wish I could be more help!!