Snail ID - Good or bad ?

[Raphael Dalmeida]

Found these 2 snails in my tank. Not sure what type.

I'm in Australia so all inverts here come from indo-pacific.

They are small, photos are zoomed.

 

[betareef]

Mulberry Whelk. A predator that drills holes in other molluscs to eat them. Not much use as cleanup crew.

 

[Raphael Dalmeida]

Mulberry Whelk. A predator that drills holes in other molluscs to eat them. Not much use as cleanup crew.

Thanks ! Glad I checked.
I guess I will feed them to my pufferfish in other tank