Speedy species surprise – creation.com

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Researchers in Trinidad relocated guppies (Poecilia reticulata) from a waterfall pool teeming with predators to previously guppy-free pools above the falls where there was only one known possible predator (of small guppies only, therefore large guppies would be safe).1 The descendants of the transplanted guppies adjusted to their new circumstances by growing bigger, maturing later, and having fewer and bigger offspring.

The speed of these changes bewildered evolutionists, because their standard millions-of-years view is that the guppies would require long periods of time to adapt. One evolutionist said, ‘The guppies adapted to their new environment in a mere four years—a rate of change some 10,000 to 10 million times faster than the average rates determined from the fossil record.’2

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