I bought them as red knobbies, I'm not sure if they have another name, I'll look around and see if I can find one. I bought two of them and would love to find more. They are always out and about and I love the way they look.
These are the ones thought that my clowns love to pick up in their mouths and carry around, namely put in the anemone. I have pulled each of them out of the nem several times, they are rigid and covered in slime, they appear to be dead. I have used a power head to blow off the slime, place them on the sand and within an hour or so, they are back cruising around. I don't know why the clowns are so attracted to them. I have three types of clowns in three tanks and all three have done the same thing!