Little critters on glass

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Scary Lobster

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Was cleaning my glass just now when I saw these little guys on my glass. I'm about 4 months into the hobby so anything new is scary haha. Could I get an ID, whether they are good or bad, and if I just let them chill on the glass or scrape/blow them off? Thank you so much everyone!

20251221_152240.jpg 20251221_154143.jpg
 
Munnid isopods
 
BRS
Scary Lobster said:
Thank you for the quick reply and ID! I'll do some research on them, happy holidays!
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Theyre great to have. Fish will eat them and they'll help keep the tank clean
 

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