The pet store sold me a shark egg...(a banded reef cat shark) i think. umm i had it in my tank for about a month and it is growing, the shark is about 2 to 3 inches now and the yolk is almost all gone. i was told when the yolk is all gone it will hatch. is this tru? what should i do when it comes out? should i isolate it in my refugium? how do i go about feeding itfor the first time?