Long white worm/snail/slug type things

[AndrewNS]

Hello All

Trying to figure out what these things are. I've been removing them just in case they are a pest. ID help would be great

 

[Stealthreefer]

flatworm or potentially a kind of slug
You really need to see what they are eating to know for sure if they are a pest. It being on the glass makes me lean toward it not being a bad thing.
Do you have any nudibranchs?

 

[AndrewNS]

I don't have any nudibranchs. I'll watch for what they are eating.

 

[EeyoreIsMySpiritAnimal]

I don't have any nudibranchs. I'll watch for what they are eating.

Can you get a top down pic?

 

[AndrewNS]

This one is less than 0.5 inch. I'll see if I can find a larger one.

 

[EeyoreIsMySpiritAnimal]

This one is less than 0.5 inch. I'll see if I can find a larger one.

That's the top? I have no idea...

@ISpeakForTheSeas

 

[ISpeakForTheSeas]

That's the top? I have no idea...

@ISpeakForTheSeas

I don't see any rhinophores or gills, so that pretty well eliminates nudibranchs. That basically leaves either a flatworm or headshield slug/bubble snail. Regardless, there's a decent chance it's predatory, though some of the headshield slugs/bubble snails are herbivorous.

OP, does the creature in question have any sort of shell inside it? (This likely wouldn't be visible without dissection.) Any visible eyespots on the head? Have you noticed any snails missing?

 

[Reefer Reboot]

See these threads,

Whitish, flat slug?

ID please. Seen moving about sedately on the glass before lights on this morning. Whitish/pinkish in colour and around 1.5" or just under 4cm long. Not my photo, but the best I could find on the interwebs.

www.reef2reef.com

Too white to be a Polyclad? Flatworm ID help please

found two flatworms on the back glass (yes, i know ...lots of algae but thats where my urchin and fromia star eats) Could these be polyclad even though white? Looking for eggs and more planaria now with magnifying glass. There is a happy Maxima Clam (small 3") that does not seem to have been...

www.reef2reef.com

Large flat worm. Any ideas?

This Worm showed. its about an inch long and moves very quickly. Its almost completely flat. i cant make out any real eye structures on it. any ideas?

www.reef2reef.com

 

[AndrewNS]

Thanks for the links. Looks like that's what I have. The contents of this tank will be moved over to my new tank soon.
Before that Flatworm Exit and a good dip before moving?