I'm with Yucca and Paul, too. Let's get as many *real* species, local variations, subspecies etc. etc. established in the hobby as possible (and by established I mean breeding populations, not just regular imports) before many species disappear from the wild. That's the priority now. This kind of topic, at least in the form presented by pea-brain, does not belong in a serious discussion forum anyway. The last thing you want to do in this forum is speculate and fantasize.
I've done a few "crossbreeding" experiments myself to study the genetic relationship between various shrimp varieties, but that's for a different purpose obviously. I put "crossbreeding" in quotes because some crosses might not be really interspecies crosses at all. For example, the tiger shrimp and the bee shrimp readily cross but they might belong to the same species or be subspecies of each other after all.
And no...the american glass shrimp and the amazon glass shrimp don't cross. Although both are Paleamonetes spp. they have different larval developments, which, so far, has been a great indicator. So, as a general rule species with different larval developments (i.e. number of larval stages if any) do not cross and hence don't seem to be very closely related.
zwergkrebszuechter wrote: As the Japanese bred CRS and some wild "new bee" shrimp to produce their high grade critters.
This is just speculation. There is absolutely no proof whatsoever so far that the white-head bumblebees (what you still confusingly call "new bee"
) can be crossed with the bee/crystal red shrimp. I have had a female white-head bumblebee in my crystal red colony for a few months and the male crystal reds are not showing the slightest interest in her even though she regularly develops eggs in her ovaries. These eggs are never fertilized and dropped immediately. I'm not saying that this "quick and dirty" experiment is conclusive, but that's the evidence I have so far. There are crystal red females in the tank so maybe the males just prefer their own species over the bumblebee and *maybe* they might choose to mate with the bumblebee if she were the only female in the tank. But that's just speculation at this point until someone actually tries it.
So, until someone can present real proof (i.e. detailed explanation of their experimental setup with pictures of parents and offspring *AND* people replicate this over time) that the white-head bumblebee, or any bumblebee variety for that matter, can cross with the bee/crystal red shrimp, let's not spread this rumor in the hobby. There are already enough rumors and misconceptions. A lot can be achieved with selective breeding, so just because some crystal reds start resembling bumblebees in color pattern does not mean that they have been crossed.
And yes...I know how the story got to Germany by the way...i.e. someone in Germany went to Japan and a Japanese breeder supposedly said that he crossed his crystal reds with "new bee" shrimp. Of course nobody considers the fact that japanese (just like many others still) are not that accurate when it comes to identifying various species/varieties of shrimp. For example the name "bee", "new bee", "bumblebee" are applied to various species and even various variations of the *same* species interchangeably! For example, depending on who you talk to, they might call a bee shrimp "bumblebee" (or even "tiger shrimp" actually) or a bumblebee shrimp "bee shrimp." I've even seen totally unrelated species from India called "bee" or even "tiger shrimp" shrimp on Japanese websites. One should keep that in mind when one decides if credence should be given to a rumor in the absence of hard evidence.
) So pick what you think would make a good cross breed and what you would try to selectively breed into the shrimp (a specific look, color, personality trait, etc. that might be found through cross bredding) and let your imagination run wild! 
