Worms on glass. Can you help identify them?

[SaltwaterGuruNeeded]

There is no triangle head...

 

[KrisReef]

Those are new to me. They look like terrestrial slugs.

 

[Pico bam]

They look like not so flat flatworms;Hilarious not really sure.

 

[SaltwaterGuruNeeded]

How do I know if they are harmful?

 

[Pico bam]

I bet somebody knows what the are. Definitely a new one for me.

 

[SaltwaterGuruNeeded]

Yeah hopefully someone.

 

[SaltwaterGuruNeeded]

Anyone?

 

[SaltwaterGuruNeeded]

Those are new to me. They look like terrestrial slugs.

Kinda do but they move fast for slugs...

 

[fishguy242]

@KJ @vetteguy53081 @Eagle_Steve ?

 

[fishguy242]

#reefsquad

 

[Goaway]

I am going to guess they are a larvae of something. Maybe snail larvae.

 

[vetteguy53081]

Similar to detritus worms, they are nematodes. If you see them, time to siphon more often and also cut back in food quantity as they are like eating leftovers and detritus

 

[SaltwaterGuruNeeded]

I am going to guess they are a larvae of something. Maybe snail larvae.

Cerith snail larvae? Do they have a larval stage?

 

[SaltwaterGuruNeeded]

Similar to detritus worms, they are nematodes. If you see them, time to siphon more often and also cut back in food quantity as they are like eating leftovers and detritus

It seems they are eating the diatoms or biofilm on the glass. I do siphon the sand every week aswell as cleaning my canister filter. With a 15% water change.

 

[SaltwaterGuruNeeded]

Similar to detritus worms, they are nematodes. If you see them, time to siphon more often and also cut back in food quantity as they are like eating leftovers and detritus

Ok I will try to siphon more often.

 

[vetteguy53081]

If there’s not a colony of them, maintain the cleaning schedule you have now.

 

[SaltwaterGuruNeeded]

If there’s not a colony of them, maintain the cleaning schedule you have now.

Ok there is a colony. I estimate about 500. I thought they might be nematodes aswell or rhabdocoela.

 

[SaltwaterGuruNeeded]

If there’s not a colony of them, maintain the cleaning schedule you have now.

Do you think they are parasitic nematodes?

 

[Goaway]

Cerith snail larvae? Do they have a larval stage?

This is someone else's picture. You would be able to see a shell if it's cerith.

 

[Goaway]

Do you think they are parasitic nematodes?

And if you have hundreds. Probably parasitic.