I am new to aquariums and I've bitten off a pretty big project. I am trying to build a self-sustaining freshwater aquarium. Things are going well, plants established nicely and a little algae growth. I ordered daphnia pulex for the lowest form of animal life and got excited when they arrived and dumped them right into the tank (stupid I know...I should have used a quarantine tank first). I think a creature hitch-hiked in with the daphnia order and I don't know what it is. Can someone identify this for me?
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