Tuxedo urchin causing havoc with my frags

[Dearth]

It's weird but it appears to be a relationship that works for both and appears to be relatively rare on RC some reefers have noticed a symbiotic relationship between urchins and fish but it's very rare

[Slyguy00]

A small dab of super glue onto the rack will hold it in place enough so that the urchin can't remove them, but is still easily removable by hand.