New tank/refugium - surprise slug

[FishyLips]

I found this in my refugium. Some type of slug, but I did not put any animals in there, so it was surprising to find. I have some Troccus and Astraea snails in the main tank. Should I be concerned?

 

[MERKEY]

Stomatella, good cuc

 

[ISpeakForTheSeas]

Agreed with the above - Stomatella snail and good CUC.