Two contractors admitted to placing goldfish in an underground steam tunnel at the Perry nuclear power plant in Ohio, according to WKYC-TV.
The contract workers who admitted to placing the goldfish there reportedly said it was a practical joke, but that prank may have them blacklisted from working in any other U.S. nuclear power plant, according to the news station. Four other workers admitted they knew about the prank but did not tell anyone, the report said.
FirstEnergy officials discovered the goldfish swimming in a juice pitcher in the restricted tunnel in May. (Read that story here)
The U.S. Nuclear Regulatory Commission (NRC) also looked into the incident since the fish were left in a secure area. The plant has been offline since March due to a planned outage, according to Power Engineering.