How can stickleback survive in pond?

Sticklebacks can survive in ponds by adapting to varying environmental conditions. They are opportunistic feeders, consuming a diverse diet of insects, zooplankton, and plant material, which allows them to thrive in different habitats. Additionally, their ability to tolerate changes in salinity and oxygen levels helps them manage the often fluctuating conditions found in pond ecosystems. Their breeding strategies, including nesting behavior, also contribute to their survival and reproductive success in these environments.