Hi all! I received a diamond goby from my lfs about a week ago and it has been doing great in my tank! However, he is a little skittish when it comes to feeding time. He darts under the rocks as soon as I take the lid off. I've tried putting mysis and pellets in the sand, but my longnose hawk, clownfish, snails, and crabs get to it before the goby comes out of his burrow. Any tips?