Hi ,I just thought I'd share this pic (sorry about the quality) to see if anyone knows what species of urchin is in the back ground,he roams around eating the xenia that grows in my tank,sometimes we have to move him on when starts to climb on my morphs and other softies in the tank but genrally he eats the xenia and coraline algea ,and I could use a hand keeping the xenia under control,thanks for any info on him:bigeyes: