There is a blue rili that is blue and red coloured that would be good for your tankUhhh, ok. Aquarium fish depot has a lot of variety of shrimp, as well as Shrimpybusiness and Buceplant. Its hard to find blue and red patterned shrimp, and trust me, I’ve tried, but blue Rili shrimp are sometimes patterned like that.
as for the tree there is also a plant identification app that you can snap a picture of the leaf and it should come up with similar trees and then you just need to see which one you have.
the valve regulator for controlling the flow of your air pump can be had for a couple of bucks at most pet stores or Amazon as well

Pic from google

