Baby Nassarius or Whelk?

[Hugo Garcia]

Hi guys, I went to my LFS yesterday and saw this guys all over their tanks. I’m in Brazil, where the import of inverts from out of the country is illegal. No when I moved here, I had to leave my Nassarius Snail behind. They supposedly don’t existe here, so I was surprised when I saw this snails at their tanks.
I asked them if there where nassarius, and they had no idea. They said this snails just showed up and started taking over the tanks.
So I was wondering are they nassarius, whelks or some other pest?

 

[Goaway]

Most likely nassarius. Looks like he's looking for food.

 

[r20crazy]

Look here

Nass vs. whelk

 

[Hugo Garcia]

Most likely nassarius. Looks like he's looking for food.

Do you know if Whelks also dig into sand?

 

[Goaway]

Do you know if Whelks also dig into sand?

Yes they do. The snail you have pictured does not have the typical striped snout of a whelk. Nor the same colored shell.