What is the first line of defense against Wels catfish introduction in North America?

Answer

Rigorous inspection of recreational equipment and prohibiting possession/release

Preventative measures in North America focus heavily on the regulatory barrier—ensuring rigorous inspection of recreational gear and explicitly forbidding the possession or release of the species if caught.

What is the first line of defense against Wels catfish introduction in North America?
EcologyanimalinvasivefishCatfish