Flatworm or something else? Pics

[marke]

I see these critters on the glass from time to time, and I am not sure what they are? First thought was its flatworms but below is a pic of flatworms I got on line. This does not look the same? Maybe its baby asterina stars or snails. Whats your thoughts? And if its not just quessing ; how or would you treat? They are white with 2 antennas, when knocked off the glass they drop as if they are solid, that is they don't float in the current.

<a href="http://s946.photobucket.com/user/benihannah/media/bug2_zpscb9938d2.jpg.html" target="_blank"><img src="http://i946.photobucket.com/albums/ad309/benihannah/bug2_zpscb9938d2.jpg" border="0" alt=" photo bug2_zpscb9938d2.jpg"/></a>

<a href="http://s946.photobucket.com/user/benihannah/media/xwhitby06jpgpagespeedicyHSN-SzyoC1_zps9c1bfec0.jpg.html" target="_blank"><img src="http://i946.photobucket.com/albums/ad309/benihannah/xwhitby06jpgpagespeedicyHSN-SzyoC1_zps9c1bfec0.jpg" border="0" alt=" photo xwhitby06jpgpagespeedicyHSN-SzyoC1_zps9c1bfec0.jpg"/></a>

 

[Lacy]

The spots on it looks like they could be on a shell or the foot of some kind of a snail. Do you ever see them on the corals? What does the top look like?

Edited to delete my comment about flatworms. Not sure what I was thinking. I was just looking at the first photo.

 

[marke]

No never seen them on coral of any kind. They seem harmless. Or so I think?

 

[rps3]

First one is a snail Marke, I have them in my sump and areas where there isn't a lot of light. Night time they come out. Free baby snails!

The second one is a flatworm. Next water change nuke the tank with flatworm exit before it gets out of hand.

 

[rovster]

Definitely a snail!

 

[marke]

Good to hear it just snails. The flatworm is not mine it's an online photo I copied to compare.

 

[Lacy]

Do you have zoas? It could be a sundial snail which eats them. Can't tell without seeing the top, but I think they normally stay in the zoas.

 

[dbenyo]

It's hard to tell by the pic but it looks like a stomatella. Is it usually longer? I have them and they are a great, harmless and free clean up crew.

 

[rovster]

Marke, look up collonista snails. That is my guess, but I don't know really, LOL! I'm still a noob....but I read a lot

 

[Jgoal55]

http://www.melevsreef.com/id/flatworm.html

Click on the second image...white flatworms are reef safe....I've had them in virtually every reef tank Ive had and they've never been a problem. That said, every time Ive added a leopard wrasse to a tank they will wipe them out pretty quickly. I've also had a lot of luck with a melanarus wrasse and red FW's.

But overall, the whites one are benign.

 

[Lacy]

All the stomatellas I have ever had were more elongated. They are great for the sand bed.

 

[marke]

Marke, look up collonista snails. That is my guess, but I don't know really, LOL! I'm still a noob....but I read a lot

Did a search and the colorful Rovster is right. Collonista they are!

Jgoal. I have been doing this for many years and have never had flatworm. Not sure if that's why my six line wrasse is so fat.

 

[silver17jo]

I've been googling it mark and not coming up with much send me a photocopy ill send it to the biology department at fau maybe they'll know?

 

[rovster]

Colorful, or colorLESS, LOL! Glad I could assist

 

[marke]

http://m.flickr.com/lightbox?id=8225079101

This is a pic I found on line of these c snails. Looks same as my pic. Seem to be beneficial grazers

Hope pic posted correctly?

 

[rovster]

Here you go....