I recently added a couple clusters of Caribbean spirobranchus sp. worms, and in with them is this guy- apologies for the poor pic. Anyone familiar with these? Cause for concern in a mixed reef with small fish/inverts?
I assume it’s some sort of massive vermetid, but I haven’t seen anything like it and my googling just turns up pics of more common vermetids.
It’s in an opaque purple & white spiraling tube that is largest at the opening, which is about 1”, oval rather than round and flecked with orange. I haven’t seen it put out a mucous net, and it doesn’t seem to have an operculum. It retracts quickly sometimes, but spends most of the time at the opening of its tube. The fleshy part has a rough texture; it doesn’t retract if I put my hand or tweezers in slowly and touch it. It very much resembles an ordinary snail head.
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Thanks WAMAS!