Could someone tell me how to tell the difference between the Peppermint shrimp([FONT=arial,sans-serif][SIZE=-1]Lysmata rathbunae) and the TRUE Peppermint shrimp(Lysmata wurdemanni).I have tried to google pics,but it is very difficult to tell the difference.Is there a way of being sure that you are definitely buying a true peppermint shrimp? [/SIZE][/FONT]