1. a type of freshwater fish that has both gills and primitive lungs, allowing it to breathe air and survive in water with low oxygen levels

Examples

• The lungfish can survive drought by burying itself in mud and breathing air.
• Australian lungfish are considered living fossils that have remained largely unchanged for millions of years.
• During the dry season, the African lungfish enters a state of dormancy called estivation.
• Scientists study lungfish to understand the evolution of vertebrates from water to land.
• The lungfish’s ability to breathe air makes it unique among most fish species.
• Lungfish are found in freshwater habitats in Africa, Australia, and South America.