FARMS Advanced| Tehama County | January 10, 2019
Location of Field Day:
Field Day Host:
Coleman Fish Hatchery
Ron Stone, Laura Mahoney
Integrated Pest Management and Aquaculture
Summary of the Day: “Spawning day”……say what?!
The importance of caring for our waterways in ways that will encourage our salmon and steelhead to be able to make the journey to the ocean and then return back to their birthplace would have truly appreciated Tehama County’s FARMS Advanced trip to Coleman Fish Hatchery.
Coleman Fish Hatchery is located right on Battle Creek which feeds directly into the Sacramento River. We had the pleasure of taking part in one of the most important processes that takes place to continue the cycle of life for our local salmon and steel-head, spawning day. What does that mean? It is when the employees at Coleman Fish Hatchery “spawn” or collect the eggs out of the female fish, fertilize them with sperm from the male fish and then send these eggs to their incubation tanks so they can grow and develop into little fish in the safety of the hatchery.
Laura Mahoney greeted us and immediately put us to work. FARMS Advanced student, Mary-Pat from Mercy High School went to the incubation building where she helped a hatchery employee receive the eggs, transfer them into incubation trays, disinfect them of any pathogens that may have been in the water or carried by the fish by using
Students, Gabe Harris from Los Molinos High and Jack Lazzaretto from Orland High went to the spawning building where they met staff from Coleman Fish Hatchery as well as staff that was collecting scales and livers for research for both the Federal Government and California State. They learned how to sex the steelhead and know if they are truly ready for spawning. It quickly became apparent why waterproof shoes and a change of clothes was recommended! Gabe and Jack became part of the team and played important roles in this spawning process.
Once the spawning was finished, we followed the researchers into their certified lab where we watched them process the livers and ovarian fluid that was collected.
Lastly, we were treated to a tour of their ozone plant. What is an ozone plant? Water entering the hatchery comes from Battle Creek and contains bacteria, viruses, and parasites that can be harmful to fish. Before the water is used for fish culture it is filtered and treated with ozone to kill all the disease organisms. All water used in the process of raising these fish is treated by this process