Snail (hitchicker) ID

[chewy tabacca]

So got home and seen this thing stretched between 2 rocks, it does not like light, I have had the tank for a year and a half and never seen it before. It is a snail with no shell. No idea where it came from.

Looks more like a slug

 

[ChiCity]

Hard to tell from the pic, but it’s either a black stomatella or a scutus...
Either way, it’s beneficial

 

[chewy tabacca]

Hard to tell from the pic, but it’s either a black stomatella or a scutus...
Either way, it’s beneficial

Looking at some online pictures I believe you are right, I am thinking stomatella. Would have never known where to start on a ID like this. I haven't added anything in the tank but SPS frags, he is good at hiding. I spend way to long staring and messing around with the tank and this is the first time I have seen him. Looked like gum stuck on 2 rocks until the flash light hit him.