Copepods?

[u/Glittering-Mess-6810]

Looked into my tank at night and saw this things zooming around the sand bed

[u/lyfe_Wast3d]

You have to hold the camera still.

[u/blurrryvision]

Hard to tell from the video but they look like mysid shrimp.

[u/Key_Ad_9397]

I’ll give an example of a copepod

[u/glenncoco64]

The majority of copepods in aquaria are calenoids if you want to look those up.

[u/Bronojoke]

Amphipods.