ID please

[Vincent100]

Just saw this little sail looking thing lurking about
Some type of sail

 

[Vincent100]

Couple more

 

[Psiber_Syn]

Looks like a small nassarius snail

 

[bios]

Euplica... vinc

 

[kashman100]

I would keep an eye on it. Might be a whelk

 

[Lionfish Lair]

Euplica.

Agree.

 

[4FordFamily]

What's the difference between this and a nasarius? @Lionfish Lair (i am curious I have no idea but want to learn)

 

[bios]

@4FordFamily
Different in size different in reproduction different in feed nassarius detritivor
Euplica algae eater

 

[Roboson]

So are they beneficial/reef safe?

 

[bios]

@Roboson Yes... only they can reproduce very fast and you will see eggs on glass of your tank