Baby stoma snails?

[alexis20cman]

I have a bunch of clusters of these tiny snail like things on my glass. I just noticed them today. I haven’t added anything at all to my tank in several months and I already have 2 stoma snails in my tank. Are they baby stoma snails or potentially something else? Thank you!

 

[oceanleaf]

These are flatworms probably from the genus Convolutriloba.
They are generally harmless (unless the population explodes) and can be controlled through nutrient management.
You can read more about it here.

 

[Cjeippert]

Looks like those ghost flatworms that are found in newer tanks without six line wrasse or choris wrasse to eatem. The redder ones with 3 pronged tail are the acropora eating variety which are bad