Welcome to the Guppy Guppy Evolution website!
Download the app, watch the videos, and find out what we know about evolution thanks to guppies.
Meet the real-life creatures
Click the image below to see more creatures
Dr. David Reznick
David is an evolutionary biologist that has spent almost 30 years studying guppies on the Caribbean island of Trinidad. During that time he invented a way to mark guppies so they could be studied in experiments in natural environments. He then used that technique to conduct some of the first experiments to show that evolution can happen much faster than suggested by the fossil record.