I've always wanted to be an expert on tadpoles. I've always fancied being a tadpole expert. It's a wonderful life if you become an experty tadpoleous, as they are known in the trade. You get invited to all the smart parties and social gatherings.Peter Edward Cook: "The Tadpole Expert" (1964)

Use of pictures

I have licenced all my pictures under CreativeCommons-by-sa 3.0 or later. Therefore, you can copy, distribute, and transmit these pictures given you keep the license and attribute it to me. Most of these pictures plus several others you may find at my account at Wikimedia Commons.
Few of the pictures I have used are taken by other authors. These authors keep the copyright. If you are interested in on of those pictures, please contact me. I will forward the request.

The photography at the header of my web page shows me collecting data in the Kidonavo River, Madagascar. It was taken by Goran Safarek (copyright by Goran Safarek).