Is this an acoel flatworm?

[cjtabares]

I tried to look up in the hitchhiker guide and an acoel flatworm is the closest looking thing I could find. If not can someone else help me ID this. Those are nassarius snail eggs next to it

 

[KrisReef]

I think you are correct!

 

[cjtabares]

I think you are correct!

Ok, thank you.

 

[KrisReef]

Ok, thank you.

They are a common accidental introduction in the hobby that sometimes rapidly expand in numbers, but other times they just seem to disappear.

 

[vetteguy53081]

I tried to look up in the hitchhiker guide and an acoel flatworm is the closest looking thing I could find. If not can someone else help me ID this. Those are nassarius snail eggs next to it

Hard to tell with all blue light but if clear in appearance also called Ghost flatworms. While they are not harmful as red planaria, they in numbers can smother bases of coral and block the needed light for production of zooxanthellae which is their energy source.
Removal can be accomplished by siphoning them with a 3/8" tubing into a nylon stocking and discard
OR
Add a wrasse such as Yellow coris, 6 line, lunare or malanurus OR even a springieri damsel which will eat them

if you see them in numbers, for the next 2 weeks you will have to look for eggs and scrape off as there is likely some and would be future acoels. Eggs are really tiny

 

[cjtabares]

Hard to tell with all blue light but if clear in appearance also called Ghost flatworms. While they are not harmful as red planaria, they in numbers can smother bases of coral and block the needed light for production of zooxanthellae which is their energy source.
Removal can be accomplished by siphoning them with a 3/8" tubing into a nylon stocking and discard
OR
Add a wrasse such as Yellow coris, 6 line, lunare or malanurus OR even a springieri damsel which will eat them

if you see them in numbers, for the next 2 weeks you will have to look for eggs and scrape off as there is likely some and would be future acoels. Eggs are really tiny

Thanks for the info.