I cannot keep this fish. I have a few meleagris, a bipartitus, even a lapillus - no problem - but the black eludes me. I have tried on three separate occasions, and each time the same thing happens. Fish comes in, hides for a few days, then comes out. Usually takes a day or two to start eating, but shortly eats with enthusiasm. But then, over the course of a month or two it gradually loses weight and then fails to come out of the sand. No signs of any mouth damage. I have assumed internal parasites and treated with prazipro, no help. Plus, the fish came to me at a healthy weight even if/though it had parasites!! What gives? Is there something quirky about diet that I have missed? Anyone have any clever ideas?