A Fantail goldfish. Goldfish can grow to 10 inches or more in ponds, but are unlikely to reach that length if they are kept in an aquarium. EuToch/Getty Images ...

While they are often seen in small aquariums, goldfish can reach lengths of up to 18 inches (45 cm) in spacious environments ...

The Buffalo Niagara Waterkeeper shared a reminder last week why people shouldn’t flush their live goldfish down the toilet. According to a Facebook post, they found a 14-inch goldfish in the ...

A 14-inch goldfish caught downstream of a wastewater treatment plant in the Black Rock Canal of New York’s Niagara River Courtesy of Buffalo Niagara Waterkeeper The 2003 Pixar film Finding Nemo ...