I have a pincushion urchin currently and i basically trained him to whever hes hungry just go up to the top of the water and i give him seaweed. I just went to the store and picked up a pencil urchin that i felt bad for cause he was in the tank with another dead one. He was only 15 bucks. How do i feed him seaweed, will he have a mouth like my pincushion? Or will he eat my clownfishes leftover food?

