Mosquito Fish (<i>Gambusia holbrooki</i>) (IMAGE) Spanish Foundation for Science and Technology Caption The mosquito fish (Gambusia holbrooki) is a freshwater species that have naturalized in Galicia. Credit Estación de Hidrobiología de la USC. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.