ExploreFish

Lungfish

Lepidosiren paradoxa

Lungfish are ancient fish that can breathe air! They have long bodies and fins like wings. Lungfish can survive in water with very little oxygen.

Habitat: Freshwater

Appearance

The Lungfish has a long, slender, eel-like body with tiny, thread-like fins, and small scales. Its skin is usually dark grey or brownish, helping it blend into muddy river bottoms and making it visually distinct from other fish.

KingdomAnimaliaPhylumChordataClassDipneustiOrderCeratodontiformesFamilyLepidosirenidaeGenusLepidosiren

Lungfish

Interesting facts

Baby lungfish have feathery external gills, like tiny salamanders!

Lungfish are sometimes called "living fossils" for their ancient lineage!

Some lungfish have lived for over 100 years in zoos and aquariums!

They are more closely related to amphibians than to most other fish!

Special abilities

Lungfish can breathe air using a primitive lung, allowing them to survive in oxygen-poor water or when their habitat dries up.

Lungfish can burrow into the mud and create a protective cocoon, allowing them to "sleep" through droughts for long periods.

Lungfish has fleshy, limb-like fins that help it move along the bottom of its habitat, resembling early land vertebrate locomotion.

Measurements & details

Length: 25-125 cm
Weight: 0.5-22 kg
Lifespan: 15-80 years
Swim Speed: 1 km/h
Max Depth: 5 m
Water Type: Freshwater

Diet & Feeding

Lungfish are omnivores, munching on small fish, insects, snails, and even plants they find.

Primary Foods

small fish
insects
snails
worms
crustaceans
plant matter

Foraging Method

Foraging

Ecological connections

eaten by

Spectacled Caiman

Caiman crocodilus

Hunted by caimans as they move through water.

eaten by

Wolffish

Hoplias malabaricus

Larger fish may prey on juvenile lungfish.

eats

Mystery Snail

Pomacea bridgesii

Consumes these slow-moving snails from the riverbed.

Traits

Omnivorous

Meet versatile eaters who enjoy a wide variety of foods, from plants to other animals, allowing them to adapt to many different environments. They're nature's flexible diners!

Burrowing

Dig deep and discover animals that build amazing homes underground! They create tunnels and chambers to stay safe, find food, or escape the weather.

Thermoregulating

Learn about incredible animals that can keep their body temperature just right, no matter how hot or cold it gets outside! They have special ways to stay warm or cool.

Ancient Lineage

These fascinating organisms carry echoes of the deep past, with ancestors that have roamed the Earth for an incredible span of time. They are living links to ancient worlds!

Longevous

Marvel at organisms that have an incredible capacity to live for a very, very long time, sometimes spanning centuries or even millennia. They are the elders of the natural world!

Freshwater

Discover animals and plants that live in non-salty water, like rivers, lakes, and ponds! These watery homes are vibrant with life.

Regenerative

Imagine if you could grow back a lost arm or tail! Some incredible creatures have the power to regrow body parts, making them truly amazing survivors in nature.