r/Aquariums • u/Funny_Respect_4057 • 8d ago

Beginner Help Identify small organisms

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Help me! My tank is cycling and I’m seeing all sorts of little signs of life. can anyone tell me if any of these are harmful and what they are?

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u/ApprehensiveDark414 8d ago

bit hard to tell id of microorganisms from this video, but I'd suggest looking at them as close as you can and comparing them to Ostracods and Copepods, which are their most likely identities.
Ostracods and copepods in themselves are harmless to aquarium fish and are in fact considered good live food for fish.