thanks siskou, ive had my gobi for almost a year. and mine eats mostly algea and sifts the sand. He has never eaten prepared food. exept when i had him in a hospital tank i did feed him live brine shrimp. but that was only for a week. i have read where people think that they are like mandran gobies, but i dont think so, he wouldnt have been alive this long. and every morning at the same time when the lights come on he comes out of his cave and lays one healthy poop! lol so i know he is getting enough to eat. he is the only original fish left from when i stated my tank. i use to have a clown gobi also that passed away in november.