ID a nudibranch of some sort?

[pbft_90]

Saw this guy chilling on my phosphate bag, anyone know what kind he is and if they're problematic? I've never known nudis to be a problem but he's chilling in my sump so I'm not too concerned.

 

[Adetia]

That looks like stomatella snail to me.

 

[Sugar Magnolia]

Yes, stomatella snail.

 

[pagojoe]

Yup. He's a good guy.

 

[pbft_90]

Sweet thanks gang