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All three breeds of Lungfish fall into a hibernation state when water levels are low to none. The South American Lungfish digs a hole in the moist lower level of mud until the water returns. Its African cousin takes this state further. Its secretes a mucus like substance that turns into a leather sake around the fishes body. This sake hold the remaining water in the lower level of mud around its body keeping it moisturized. In this state their metabolism slows, allowing the fish to stay in such a state for up to 2 years. The Australian Lungfish simply waits out the drier weather in whatever remaining water is left in their pond.

Prehistoric Wonder: the Lungfish

A Little More About Lungfish

Interesting Facts About Lungfish

  • Lungfish are located in the rivers and swamps of South America, (western) Africa, and Queensland Australia
  • The African Lungfish is the largest of the three, its maximum length can be up to 6 1/2 and 7 feet. The South American is second in length at a max of 4 feet long.

Life Expectancy and Breeding habits

  • Lungfish are very glutinous creatures eating virtually anything that can fit into its mouth. Their diet consists of snail, small fish, roots of plants, crayfish, crabs, shrimps and frogs.

The average life span of a Lungfish varies , but none are under 20 years of age, if conditions are adequate.

The Australian Lungfish has the highest recorded life span at 100 years, followed by the South American at 80+ years of life. The African Lungfish has the shortest recorded lifespan at only 20 + years.

The breeding habits of the Lungfish isn't spectacular. All spawn in the wet seasons of their regions. The only differences is the female South American typically lays her eggs at the bottom of their territory, much like a fish or frog. The Australian Lungfish creates a next from mud in it's shallow pond and leaves the male to protect the eggs until they hatch into fry. Fry generally are slow growing and take three weeks to hatch.

  • The Australian Lungfish is the only of its species that still have present gills. Its uses them when water levels are high and when water levels are low it uses its one lung to breath air directly.

Lungfish Taxonomy

Kingdom: Animalia

Phylum: Chordata

Class: Sarcophterygii

Order: Neoceratodontidae

Family: Ceratodontidae

Genus: Lepidosiren (South American), Protoperus (African), and Neoceratodus (Australian)

Species: N/A

What is a Lungfish??

A Lungfish is just as the name portrays, Lungfish have a set or one lung allowing them to breath air when water is in short supply or oxygen levels are poor.

When born some Lungfish fry have a set of gills that fade as they grow older, and lungs become more prominent.

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