shrimp on the riverbank
Particularly after a water change, the shrimp like to collect on the river run shelf. I’m not sure what they’re after here, but this is a consistent behaviour of theirs. This is the kind of thing you’re not going to be able to observe without a shallow flowing water component to your shrimp habitat – something which I suspect is pretty unusual. They also like to sit in the flow generally, but the water change seems to really get them going. Others have seem similar behaviour from their shrimp during water changes.
Cherry shrimp generally stay in the water
shrimp doing a pull-up
Here’s an interesting example of a bloody mary shrimp (Neocaridina davidi) lifting itself out of the water. Fortunately, they don’t do this very often and are sensible enough to get back in the water directly.