As a natural predator of mosquito larvae, mosquitofish have been used for mosquito control purposes throughout the world for many years. More than 100,000 of this fish are produced each year at the District's mosquitofish production facility. READ MORE.
Detailed information regarding the proper care of mosquitofish. READ MORE.
PLEASE NOTE: In-person mosquitofish pick up is discontinued. Please make requests for mosquitofish through the District voicemail at 925-685-9301 or online. You must be a resident of Contra Costa county to receive mosquitofish. Once a request has been made, a District employee will inspect the property and if mosquitofish are necessary and appropriate, the employee will place the mosquitofish in the Contra Costa County water feature associated with the request.
These videos are dedicated to the biological element of our Integrated Vector Management Program - using mosquitofish and researching the potential species of other fish to help combat mosquito larvae naturally. READ MORE.
Documentation of researching the potential for utilizing native species of fish for mosquito larva control and the potential for spawning in captivity of these fish. READ MORE.