Woke up to about 100 of these in my tank

[jabberwock]

they are about 4 mm long and 2 mm. They have distinctive antennae and move like a snail. They have a rounded shell when viewed from the side. Could they be baby nessarius snails? Sorry for bad pictures.

 

[James M]

Can u get a pick with white lights on ?

 

[Maggie321]

What's your stock list?

 

[jabberwock]

Current livestock is:
1 Yellow watchman goby
1 Firefish
1 Lawnmower Blenny
1 Royal Gramma
1 Tiger Sand Conch
1 hermit
3 nessarius snails
8 corals, softies and lps

 

[jabberwock]

I briefly had 2 trochus snails a couple months ago

 

[Lovemyreef2015]

I'm thinking collonista snail. Need a better picture to be positive

 

[Breadman03]

The pics are fuzzy, but I'd bet on stomatella snails.

 

[DSC reef]

Hard to tell, could be stomatella, collonista, etc. Can you pull one and get a good pic of it.

 

[Maggie321]

Current livestock is:
1 Yellow watchman goby
1 Firefish
1 Lawnmower Blenny
1 Royal Gramma
1 Tiger Sand Conch
1 hermit
3 nessarius snails
8 corals, softies and lps

This must not include your hitchhiker list... I'm willing to bet there is colonista or stomatella you are unaware of. I would bet it's that, most likely colonista. If it is nasarius snails, score! But either way, if there's 100 you can see, there's 100 you don't and they are there for good. I don't think any of the possibilities are a major issue. Though some complain about the colonista snails.

 

[jabberwock]

I used reef saver dry rock, tank is 5 months old. It could have come in on a frag. Uh, it has legs.

 

[jabberwock]

This must not include your hitchhiker list... I'm willing to bet there is colonista or stomatella you are unaware of. I would bet it's that, most likely colonista. If it is nasarius snails, score! But either way, if there's 100 you can see, there's 100 you don't and they are there for good. I don't think any of the possibilities are a major issue. Though some complain about the colonista snails.

Only hitchhiker I have id is a bristle worm, and a micro brittle star.

 

[rock_lobster]

stomatella

 

[Maggie321]

Hard to tell, could be stomatella, collonista, etc. Can you pull one and get a good pic of it.

Yep pull one and take a pic...

 

[jabberwock]

I will grab one!

 

[Bob Loblaw]

Species of Ostracod?

 

[jabberwock]

Great pics huh? Sorry, iPhone not very good at macro.

 

[jabberwock]

Species of Ostracod?

Stuck to the glass and back of the tank. Moves like a snail. It just sort of slides along...

 

[jabberwock]

Last try, magnifying glass and iPhone

And a data point. Royal Gramma sucked it in and spit it back out when I returned to the tank.

 

[Maritimer]

Based on the "hairs" protruding from underneath a pretty sturdy, complete-looking shell, I'd say Collonista snail. Tiny cousins of trochus, they're great little cleaner-uppers to have around!

~Bruce

 

[jabberwock]

Based on the "hairs" protruding from underneath a pretty sturdy, complete-looking shell, I'd say Collonista snail. Tiny cousins of trochus, they're great little cleaner-uppers to have around!

~Bruce

Thanks for your suggestion. Given the definitive spiral, I will rule out Stomatella and agree that they are likely collonista. They do not have the elongated spiral of the nessarius. As they grow they will be easier to identify and I will update. I appreciate everyone's input!