Also known by the scientific name Carassius auratus, goldfish can live to be 25 years old, weigh as much as four pounds and measure well over a foot long. They’re also surprisingly resilient: They can survive in severe conditions and can weather winters in bodies of water that have frozen over, living for months without oxygen. This quality, Bajer said, “makes them really, really tough and allows them to dominate certain types of ecosystems.”

Source: Washington Post July 12, 2021 03:00 UTC