Catfish Walking on Land Find Water by its Smell

Walking catfish, native to southeastern Asia, can survive on land for up to 18 hours by using lung-like organs. They navigate by detecting water bodies through scent, as shown in a study where they were drawn to pond scents but avoided hydrogen sulfide. Their orientation relies more on taste than smell, with taste buds covering their bodies. Despite having nostrils, they likely use their lungs to 'sniff' air. Genetic studies suggest they have extra smelling genes, which may help them recognize airborne chemicals. Understanding their navigation could aid in managing invasive populations.

How do walking catfish manage to survive on land for extended periods?

What unique adaptations do walking catfish have that allow them to detect water bodies?

Describe the method used by researchers to study the walking catfish's response to different scents.

What role do the taste buds on the walking catfish play in their ability to navigate?

Why are scientists interested in understanding how walking catfish find their way in non-native environments?