HH,
I can not access the link. It seems to be a link to an advertisement.
I do not know of any collectors in South America that collect shrimps for the aquarium trade. I just do not think that the increasing popularity of these animals (esp. in the aquatic gardner community) has been passed from ...

Because most freshwater shrimps are notoriously devoid of color and the market for them is not large enough to justify importing them in large numbers.
There are tons of Macrobrachium (the Asian equivalent of Pseudopalaemon ), but they all look almost identical and are usually a translucent gray ...