Mustafa, recently i went to my wal-mart and saw some ghost shrimp. But guess what. There were some strange looking ghosts with no red whatsoever and white spots . At first I thought they were going to die but they weren't milky white. Are they p. kadiakensis? Can you post a pic of yours so i can compare it to mine? Thanks.
Yes, try to breed them. They usually have more eggs than P. paludosus and their larvae are smaller and go through more larval stages before they turn into Postlarvae (mini-shrimp). They are usually not offered in Petstores, but I guess they do offer them once in a while. In what state are you? Maybe Walmart obtained them locally.