Clams and Purple Short Spine Pincushion Urchin

[Yuki Rihwa]

I got this Purple Short Spine Pincushion Urchin for free from LFS as a token of a long good customer with them they told me it's a tuxedo urchin but I doubt that and do some research I found it's exactly same like this one from Liveaquaria
http://www.liveaquaria.com/product/...-pincushion-urchin?pcatid=2912&c=497+530+2912
And their spec sheet listed "Reef Compatible: With Caution"

I'm quite paranoia with their words "With Caution" so Is it clams safe?

 

[flsalty]

I've never heard of them eating clams. They eat algae. The main concern is bulldozing rocks and they like to carry stuff for camouflage.

 

[Yuki Rihwa]

Well, I woke up early and check my tank and took this picture with a flash light.

Coincidence that it's just like to sit on top of my clam?
This guys really got it ticket out of my tank unless someone give me a good reason to keep it.

 

[Lovemyreef2015]

I would be worried about one of the spines breaking off if the clam closes. The spines are sharp. I personally wouldnt risk it.

 

[DSC reef]

I'd remove it yuki. Even if it's not deliberately hurting the clam I still would not risk those beautiful clams to an urchin. Also, for every few reefers that report that they never had an "issue" with that urchin there will be one reefer who has. Don't be the one with that amazing clam collection you have.

 

[Yuki Rihwa]

Thanks everyone! it's out to my sister tank.

 

[sfin52]

Got to love the lfs. They really are a blessing especially when you get freebies for being loyal.

How did the clam do? I’m looking at an urchin. How’s it doing at your sister.

 

[Lainny]

So....just wanted to add my two cents about my urchin climbing on my clam....I freaked out at first...and then I saw it moving around the outside where there is Hair algae growing. I notice that when my clams starts to get some algae on it it starts to hold back opening all the way....almost as if it has pitched Mantel disease. So I'm hoping by my Urchin keeping it clean it will want to open its entire Mantel. Another thing I noticed which I didn't think was possible....but when the urchin was sitting more to the left top of it at one point....my clam opened just his right side and left the mantel in on the right. It was weird to see that. Anyway....It's a pincushion Urchin