Jellyfish or some type of plankton stage of another animal?

[JediCruz]

Found this on the silicon of my glass. Haven’t found any others. I have no idea what it might be. Seems stuck there.

Jellyfish or some other planktonic pre-stage of another animal?

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[KJ]

Look like hydroid jellyfish.

hydroid jellyfish - Bing

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[vetteguy53081]

Agree on hydroid- Starve it and it will soon be gone by removal or assuring no food reaches it, They favor brine shrimp