id please

[rigby]

Got a hiker here, just curious if anyone knows what it is and if it is good or bad in a reef tank. thank you

 

[rwhite]

Looks like an urchin, but no idea what type or if it's "safe". Sorry.

 

[greatfullreefer]

looks to me like a Spiney Urchin great algea grazers will starve if lack of food.

 

[cprdnick]

Closer to a type of pencil urchin I think. Don't quote me on that. Most urchins are not reef safe.

 

[clarkiiboi]

Not sure, but bumping ya. It does look like an urchin of sorts. I dont think I ever seen any posted like that here. Bump again for others to see.

 

[spsaddict]

deffinetly a pencil urchin, and they will strip the rocks af coraline... but a cool hitch hicker none the less, i got a purple spine for a hitchhiker