Definite Guide to Freshwater Stingrays Potamotrygonidae, Heiko’s article in the PFK’s August issue Natasha Khardina30 July 2010 Special Events - past No Comments Heiko Bleher starts a two-part assessment of stingrays, spotlighting the popular South American potamotrygonid rays. This post is also available in: Italian German French Spanish Português ← AMANDA FLORA BLEHER IS BORN TODAY The search for Iranocichla, Heiko’s article in the PFK’s August issue → Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.