Here is an interesting article on Shrimps.
http://www.practicalfishkeeping.co.uk/content.php?sid=5939&utm_source=PFK_newsletter&utm_medium=email&utm_campaign=September_13_2013&utm_term=Mail_order_from_Sharnbrook_Shrimp&utm_content=html (http://www.practicalfishkeeping.co.uk/content.php?sid=5939&utm_source=PFK_newsletter&utm_medium=email&utm_campaign=September_13_2013&utm_term=Mail_order_from_Sharnbrook_Shrimp&utm_content=html)