Acan skeleton growth

[Rico Suave]

My girlfriend and I have had a 20g nano tank up and running with a very beautiful Acan in it. It has fallen off its ledge a few times from either our clown bumping it or a snail charging head first around it for food and after a few times pucking it up from loving helping hands. We are surprised to see what looks like possibly its skeleton growing out fron the left side of it.

But I've read a lot about new fleshy heads growing rather than the skeleton first.
Anyone have any ideas of what this actually is? Or is our suspicion correct.
Commenta welcome

 

[James M]

Vermetid snail, it’s bad and should be scraped off or super glue the hole

 

[jsvand5]

Yep. Scrape it off. Tough to tell in the pic bit it looks like there may be another one on the rock work just below the the one on your acan.

 

[Rico Suave]

Thanks so much for clearing that up for me. Its clean now but sad cuz I had to handle it.

Thanks again guys!