Koi aren't lightweights either; they typically tip the scales around 35 pounds (16 kg), and experts advise filling a pond ...

A Pacific Palisades resident returned home to find the koi fish that have been in her family for over 15 years untouched.

A fish was finally rescued from a backyard pond after the sturgeon grew to be nearly 6-feet long from its original size of ...

PORTLAND, Ore. (KOIN) — A large koi fish was spotted and removed from the McKenzie River near Eugene after a report to the Oregon Invasive Species Hotline on Wednesday. The Oregon Department of ...

District fish biologists removed the large koi which was most likely intentionally released into the McKenzie River. Koi can live up to 25 years, reproduce rapidly, and can survive very cold winters.