What's this on my toadstool?

[ReefingIsMyTherapy]

I posted this on a FB group, but wanted to share here as well to get your expert opinion. Any idea what's this "thing" on my toadstool? Someone on FB said barnacle. I Google'd it and it looks like it but not sure (I had no idea what a barnacle was until 5 minutes ago :p)

What do you guys think? Thanks in advance for the help!

 

[WheatToast]

Could you take images of the dorsal side of the organism? It's hard to tell at this angle.
Barnacles are rare in aquaria, only occasionally showing up on live rock. The hitchhiker in question looks too fleshy to be one of these, though.

 

[vetteguy53081]

I posted this on a FB group, but wanted to share here as well to get your expert opinion. Any idea what's this "thing" on my toadstool? Someone on FB said barnacle. I Google'd it and it looks like it but not sure (I had no idea what a barnacle was until 5 minutes ago :p)

What do you guys think? Thanks in advance for the help!

Possible chiton snail but could use top view and better angle. You can try giving it blasts with a turkep baster and see if it dislodges, then take a couple of pics

 

[ReefingIsMyTherapy]

Could you take images of the dorsal side of the organism? It's hard to tell at this angle.
Barnacles are rare in aquaria, only occasionally showing up on live rock. The hitchhiker in question looks too fleshy to be one of these, though.

I'll certainly try! I need to unplug the frag to get a better picture. This is the side of the frag that's facing the front glass on my tank.

I don't have live rock and haven't added anything to my tank in probably 3 or 4 months (dealing with dinos at the moment). That's why I'm super surprised to see this new creature all of the sudden.

 

[ReefingIsMyTherapy]

Possible chiton snail but could use top view and better angle. You can try giving it blasts with a turkep baster and see if it dislodges, then take a couple of pics

Will try to get better pictures. Thanks!

 

[EeyoreIsMySpiritAnimal]

Does it move? Can you remove it with tweezers?

 

[MERKEY]

+1 chiton

 

[ReefingIsMyTherapy]

Does it move? Can you remove it with tweezers?

Don't know whether it moves. Haven't tried to remove it, but that's the next step after taking more pictures

 

[vetteguy53081]

Don't know whether it moves. Haven't tried to remove it, but that's the next step after taking more pictures

That’s the reason I recommended turkey baster to determine if stationary or moves

 

[jabberwock]

Fleshy Limpet?