ID Help: Nocturnal Orange Snail

[WilliamJohnCIII]

These creamsicle-looking guys only come out at night, after all the lights are out. I think they hide in the rockwork during the day.

I've got at least two of them. They're similar in appearance to my smaller nassarius snails (about the size of a black bean, in burrito terms). They appear to only graze on my algae so far...

Same image with black and white background for emphasis

 

[Crabs McJones]

Marginella snail. Remove them as you see them. They're predatory.

 

[WilliamJohnCIII]

Are you sure? I always thought marginella had more rounded shells, like this: https://www.lionfishlair.com/hitchhikers-guide/snail-marginella/

These ones are more conical with a coarse texture, so I thought they might be different. Haven't seen them hassle anyone yet.

 

[WilliamJohnCIII]

After some research, my leading theory is that they are possibly Strombina pumilio or some similar species of the Columbellidae family. The variations shown at gastropods.com (which, although not the most user-friendly, is a fantastic resource) seem consistent with the physical features I can observe from the two in my tank.

From gastropods:

 

[reefcleaners]

Looks like a Cylindrical Cone. They are pretty small and common enough Indo hitchhiker.

Edit Wikipedia has a page on them, when matching keep in mind the color and patterning is variable with this species.