Instead, goldfish thrived and were soon found in the Potomac and Susquehanna rivers and even the Chesapeake. The bBay’s warm, nutrient-rich waters are ideal for goldfish, containing enough ...

Goldfish get the oxygen they need two ways: by using their gills to process it out of the water or by rising to the surface and gulping air. In an oxygen-poor, filterless bowl, they have to over ...

The roughly bowling pin-sized goldfish is far from the only one of its kind: In 2013, for example, a 4.2-pound, 1.5-feet-long goldfish was found in Nevada’s Lake Tahoe basin.

Consider this your annual reminder: Don't dump your pet goldfish into a lake. Invasive species are, generally speaking, not so great. When an organism moves into a territory where it lacks natural ...