Justin,The reason I went with the Tux.Is because we didn't have any longspines at the store:D I do plan to get a longspine,as soon as we get some in at the store.I also want a Zebra striped urchin.But they are venomous,and pack a hell of a sting.
Since putting him in the tank,he's really worked on the red turf algae,which is main reason I wanted an urchin any way.