In the future please give a little text description too as to what we are supposed to be looking at in ID pictures..
But critters moving on the glass is harmless pods..
Not sure if someone has shared this link with you yet but its a good site to browse and see what the common "critters" that pop up in our tanks are and if they are bad or not.. https://www.lionfishlair.com/hitchhikers-guide/
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