These are one of my favourite shrimp though not often available - I've had some live for a couple years in apparent health
But just got some recently that have not done well at all - they didn't ship in well (I arranged to be there when boxes landed) though some neo's seemed grand
These guys were all opaque (always a bad sign with shrimp) & very quiet, DOA's just seem to "disappear" rather than becoming notable pink bodies
I brought 20 home anyway - they went into a bare bottom Q tank with plants & Eheim BioMech scattered about about + some filter sponge (in addition to a small intank filter providing low flow)
I'd guess maybe 10 remaining after 2-3 weeks, some of these are looking grand, growing well, translucent, lively, bright "stripes" ( they really are lovely with those neon glo stripes), but others are still struggling
There were also a few mystery shrimp in the group - this is not uncommon with these shipments, sometimes the entire lot will be "mystery" shrimp - though perhaps ofttimes is more accurate statement, this shop orders them in regularly from apparent different suppliers and last 5 bags have arrived with red-line in 2 of 5
This is the best
description of the "red-nose" shrimp I get (sometimes)
A brief summary with references - this seems to indicate that mature shrimp may live in freshwater but brackish is required for larval development
There are other very similar looking shrimp that may be shipping - note these do live, breed in freshwater
But back to you query, sorry no solutions