ID this critter?

[lrk240]

Any thoughts on what this critter is?

 

[EnterName]

A: Some polychaete, but hard to see due to the blurry image. I think it might be a harmful fire worm species, but it's hard to tell from the image.

B: Snail, doesn't look like one of the bad guys.

 

[Baldyreef]

Snail seems to be some kind of sundial snail

 

[EnterName]

Snail seems to be some kind of sundial snail

Sundial snails (the bad ones) look like their shell is a mosaic: https://coralrx.com/sundial-snails/

If you are talking sundial snails in general it might be true though but I would have guessed Collonista sp. first.

 

[Baldyreef]

Snail seems to be some kind of sundial snail

Sundial snails (the bad ones) look like their shell is a mosaic: https://coralrx.com/sundial-snails/

If you are talking sundial snails in general it might be true though but I would have guessed Collonista sp. first.

I think your right I find them from time to time in my own tank and they look exactly like that

 

[lrk240]

Thank you! I will get a better photo and post shortly

 

[lrk240]

Close up

 

[EnterName]

Close up

I would say Amphinomidae (fireworm) from the image, but am not 100% certain.

For a Polynoidae (Scale worm) the segments lack the overlapping scale-like pattern, but both Annelid families are not welcome in reef tanks.