June 28, 2019

Killfish manage to endure a variety of environments.

The wee freshwater fish survive in isolated desert pools, lakes made by floodwater, even seasoned ponds that are little more then puddles.

One place scientists didn’t expect to find them was in swan poop. But an international team of researchers reported in June that whole Killfish eggs make it through the digestive tract of water birds intact, with one egg in the study even hatching more than a month after its transit through a swan.

The findings suggest that bird feces may be capable of carrying fish eggs far from their original locations.