SALEM, Ore. -- The Food and Drug Administration has confirmed that a chemical that caused thousands of pets to become sick has been found in fish feed in Oregon.

Melamine was found in fish feed at the Marion Forks Hatchery in Idanha, according to the Oregon Department of Fish and Wildlife.

The feed is used as a starter diet for juvenile salmon and trout, the ODFW said. The distributors of the feed had also sent it to the Willamette, Gnat Creek, Big Creek, Cole Rivers, Butte Falls and Leaburg hatcheries, according to the ODFW.

The Marion Forks Hatchery manager said the hatchery had discontinued use of the feed several days earlier when the FDA initially contacted them about testing the feed.

Although the fish were meant for human food, federal officials said that the contamination level was likely too low to hurt anyone who ate the fish.

"Although officials from the FDA have not associated any risk to the fish or humans as a result of the melamine finding, we've stopped the feed," said Steve Williams, ODFW's deputy fish administrator.