After watching your Youtube video, I can tell you that your 'whisker shrimp' are a Macrobrachium shrimp species. It is impossible to tell exactly which species, but they show aggressive behaviors similar to M. rosenbergii. FYI, M. rosenbergii get very large and if you have multiple males, the dominate may kill off all of the others. They are also known to be very aggressive towards fish and can grow quite large.
Not all Macrobrachium shrimp are aggressive. Many are very peaceful and can
be kept with peaceful fish. I recommend searching the species page at
http://www.petshrimp.com/ for some information on peaceful species. There is also some information in the forums on the more aggressive Macro shrimp species (but you need a forum membership to fully utilize the search feature).