Hello.
The shrimp with the opposing red diagonal bars in the pictures look like Tiger Shrimp (Caridinia Cantonensis sp.) to me.
The bright red shrimp in the pictures is called a Cherry Shrimp (Neocaridinia Heteropoda)
I've got information from them from another forum i use. http://ukshrimp.co.uk/caridina-species-profiles/