New cherry shrimp won’t stop moving... is that ok?

[Kenfused]

So I just got some new  Cherry shrimp  shrimp from Aqua huna , I did a six hour acclamation yesterday and set them free in a 20 gallon tank that has been set up for several months without anything in it besides nails and sponge filters and plants. After letting the shrimp go they look pretty good overall except it’s kind of strange that they seem to never stop swimming. It’s kind of entertaining, but they are ignoring the food that I put in that my other shrimp tank shrimp go crazy for, so I’m not sure that this is a bad thing or not. It’s been 24 hours and I just keep swimming around, so I’m afraid they’re going to tire out without eating

 

Does anyone think this is a problem?

[Streetwise]

Do you see any evidence that they might just be grazing on things in the tank, like biofilm? When my shrimp have enough food from the environment, they are less interested in external food.

[Kenfused]

They just won’t stop moving since yesterday. I know there is plenty of biofilm since the tank is set up for a long time and has driftwood as well