Crayfish and amphibians are vanishing as a stealth invader spreads statewide, raising alarms about cascading losses across fragile wetland ecosystems.

Invasive Asian swamp eels in Florida are typically olive or drab brown with yellow-orange bellies. They can grow to roughly 3 feet and are nocturnal.

Scientists warn the eel could be more catastrophic than the Burmese python, causing an "avalanche of prey loss." The eels have caused massive declines in crayfish, small fish, and amphibian ...