I know of areas here where this type of urchin has turned entire lava based substrates into "swiss cheese". Not something I would want to have happen within my tank.
I had one as a hitch hiker and did not ever see it. I would see little piles of rock "dust" here and there. Finally, after I don't know how long I saw the thing. About the size of a small marble and I removed it immediately. Not more little piles and area's of rock missing.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.