Invasive swamp eels are spreading through Florida waters, and scientists say flooding is helping the non-native fish move into new waterways. Since first being spotted in Central Florida in 2023, the long, eel-like species has established populations in several lakes, prompting researchers to track their spread.
Scientists with the U.S. Geological Survey are using electrofishing, sending a small electric current into the water to temporarily stun the eels, for sampling. This helps to monitor populations and study their diet and reproduction.
“Once they’re in one lake, flood conditions can carry them to others,” said Dr. Wesley Daniel, a USGS fish biologist.
Officials warn the public not to release aquarium pets or live food into local waters.
