i have a brown serpent star and was wondering what i need to feed it? it seems that when i feed the damsels brine shrimp it comes out and starts "waving" its legs all around as if tring to get the food (it never gets any because the damsels get it before the star does) do i need to "hand" some down to it or will it scavange for left overs? if i do need to feed it seprate what should i give to it?