Why are Cisco or lake herring fish endangered?

Cisco or lake herring fish are endangered primarily due to habitat degradation, overfishing, and the introduction of invasive species that disrupt their ecosystems. Pollution from agricultural runoff and industrial activities has further compromised their water quality and spawning grounds. Additionally, climate change poses risks by altering water temperatures and oxygen levels, which affect their survival and reproduction. Conservation efforts are crucial to protect their populations and restore their habitats.