Skip to main content
U.S. flag

An official website of the United States government

How did Asian swamp eels get here?

Right-click and save to download

Detailed Description

Listen to hear the answer.




Public Domain.


[music fades in]

Welcome to CoreFacts, where we're always short on time and big on science. I'm Brian Campbell. Today's question is …

How did Asian swamp eels get here?

The method of introduction is not known. The eel may have been introduced as a result of aquarium releases or a fish-farm escape. Chinese immigrants who wanted to propagate the animal as a food fish reportedly brought the eel to Hawaii. Similarly, it is possible that individuals who wanted to establish it as a food fish illegally released eels into open waters in Georgia or Florida.

And now you know.  Join us again every week for a new CoreFact.  For other CoreFacts, or for CoreCast, our in-depth science podcast, go to  If you’d like to have a question featured on our show, give us an e-mail at or a phone call at 703-648-5600.  Remember, long distance fees do apply.  CoreFacts is a product of the U.S. Geological Survey, Department of the Interior.

[music fade out]

Show Transcript