Couple of things. First, nice urchin
Looks like a porupines butt! (meant as a compliment because the spines are wicked looking). Second, just watch it because they can eat all algae including corraline and may move things around. Third, could you make your pic 500x size pls
I want a nice urchin but my little frags already get tossed around too much but who knows :notsure: