I have a new blue tuxedo urchin, who seems to have settled down well in my tank. I recently noted that he seemed to have extruded long spines/tentacles that were much longer than his regular spines. You can see them in the picture, sticking out to the sides of the tank. Does anyone know what this might be about?
Here's a pic (If I'm lucky, I can post it )
Here's a pic (If I'm lucky, I can post it )