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redfishbluefish
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@KJ , #reefsquad can help identify.
vetteguy53081
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Looks like a baby rock boring urchin but the pencil does have striped spines as in pic and therefore : Pencil
Pencil urchin. Opinions seem to vary on their reef safeness.
vetteguy53081
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Rock boring will hide and imbed itself well , but either can be a hitchhiker.
Agree. I had 7 rock boring urchins in my live rock that I used to start a tank several years ago. Within a year they were so big I had to sell them to my LFS.
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