I don't think you can touch any urchin, they all have those spike things. I have a purple one, he mosies about the tank with empty shells stuck to himself. LOL
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.