They’re kinda big. At first I thought rotifers but I don’t know if that’s right. They’re attracted to the light.
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Unfortunately I don’t have a microscope. The only thing in the tank is an orange decorator crab and two baby gorilla crabs. Oh and what I think is a asterina starfish if they haven’t eaten itFar too large for dinos. Something must have hatched or released larvae or so.
You will need a microscope to properly identify it. Just recently we had a snail releasing parasitic trematodes if I remember correctly. They moved like mosquito larvae in water and looked different but suddenly appearing organisms can be dangerous. I would scoop them up to take a closer look. Maybe a magnifying glass already helps.
. There aren’t any snails, but then again there is some live rock so I suppose it could be anything. Look like maybe seed shrimp (ostracods). They are harmless.
Caught my emerald crab spawning at around 3am today! Managed to scoop up one of the larvae and get it under the microscope before safely returning it to the tank :)
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Did these hatch at night? Mine were definitely smaller than that. The shape also doesn't seem correct.@christinna77 you had your emerald crab spawning recently. How big were those little buggers? Did they look similar to the ones in the video in this thread?
The swimming pattern made me think ostracod. They look very similar to the ones Ive had.These are the size of wet chia seeds, do they get that big?
Edit: I googled and they look a lot like the “giant ostracod” although smaller (these get up to like an inch I guess), so maybe you’re right!
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Yes, I’m pretty sure they did because they weren’t there one day and then I went down the next afternoon and there they were swarmingDid these hatch at night? Mine were definitely smaller than that. The shape also doesn't seem correct.@christinna77 you had your emerald crab spawning recently. How big were those little buggers? Did they look similar to the ones in the video in this thread?

I’m thinking you’re right. Most of them got caught in the filter last nightThe swimming pattern made me think ostracod. They look very similar to the ones Ive had.These are the size of wet chia seeds, do they get that big?
Edit: I googled and they look a lot like the “giant ostracod” although smaller (these get up to like an inch I guess), so maybe you’re right!
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so I tried to free as many as I could and moved them to another tank. They’re cool looking whatever they are.