What are these please, Planaria worms??

[Azzaman160]

Hi can anyone help, ive just noticed some ti y white "things" on the glass of my marine aquarium. They are tiny, id say only a couple of mm long and not even a mm wide.
If I zoom in they seem to have a black line down the centre and points on the sides of their heads, they move quick as well, very quick if its a worm?

 

[Azzaman160]

Video here

 

[ScubaFish802]

I can’t see the video but probably copepods. Do they look like little bugs?

if so they are a really good part of the clean up system in your tank

 

[ScubaFish802]

If they are worms I believe the clear ones are not bad guys? Hopefully someone can correct me if I’m wrong .. @KJ

 

[SHNICI]

look like a copepods on the glass. (probably you mean the moving creatures ?)Try to match from google if they are

 

[Osidereefer521]

Definitely look like copepods. They are good to have!

 

[corey904]

Hi can anyone help, ive just noticed some ti y white "things" on the glass of my marine aquarium. They are tiny, id say only a couple of mm long and not even a mm wide.
If I zoom in they seem to have a black line down the centre and points on the sides of their heads, they move quick as well, very quick if its a worm?

A good way to tell if it’s a copepod is look really closely and see if you can see their legs on the bigger ones

 

[vetteguy53081]

The antennas indicate this is a sea slug and that of the Sacoglossan group.
Copeods have antennas too but more fiber-like

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