Three-toed amphiuma facts for kids
Quick facts for kids Three-toed amphiuma |
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| Conservation status | |
Scientific classification  |
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Urodela |
| Family: | Amphiumidae |
| Genus: | Amphiuma |
| Species: |
A. tridactylum
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| Binomial name | |
| Amphiuma tridactylum Cuvier, 1827
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| Synonyms | |
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Syren quadrapeda Custis, 1807 |
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The three-toed amphiuma (Amphiuma tridactylum) is an unusual aquatic salamander native to the Southeastern United States. Even though it looks like an eel or a snake, it is actually an amphibian. This fascinating animal belongs to a special group of creatures known as amphiumas.
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What Does the Three-Toed Amphiuma Look Like?
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The three-toed amphiuma has a long, slender body that is dark gray, black, or brown. Most adults grow between 18–30 inches (46–76 cm) long. The largest one ever recorded reached an amazing length of 41.25 inches (104.8 cm).
Although it resembles a slippery fish, it has four very small leftover limbs. Each of these tiny legs has three little toes. Because its legs are so small, they do not help much with walking. Instead, the animal slithers smoothly through mud and water just like a snake.
Along its body, it has around 62 skin folds called costal grooves. Its eyes are quite small and lack eyelids. Unlike adult frogs, it keeps open gill slits on the sides of its neck. Scientists also discovered that this creature has biofluorescence, meaning its skin can glow under special blue lights.
Where Does the Three-Toed Amphiuma Live?
Habitats Across the American South
This amphibian makes its home throughout wetlands across the southern states. It lives in areas near the Gulf of Mexico, including Alabama and Texas. It also ranges north into Arkansas, Missouri, Tennessee, and Kentucky.
Cozy Homes in Mud and Water
Three-toed amphiumas love slow-moving, shallow waters with lots of plants. You can find them hiding in muddy swamps, calm bayous, and shallow wetlands. They also settle near cool seep springs flowing over limestone rocks. During the day, they love to squeeze into abandoned crayfish burrows. Sometimes, they even live in roadside ditches filled with water.
Habits and Nighttime Hunting
How Amphiumas Hunt for Food
The three-toed amphiuma is a night hunter and a meat-eater, or carnivore. It spends daylight hours resting under thick plants or deep in the mud. Once darkness falls, it explores the water to search for prey.
Amphiumas eat a wide variety of small creatures. Their favorite meals include:
- Wiggly earthworms crawling in wet soil
- Crunchy crustaceans, especially freshwater crayfish
- Small fish swimming past their hiding spots
- Slimy snails and water insects
- Other small water creatures and tiny reptiles
Because they swallow anything that fits in their mouth, fishermen sometimes catch them by mistake. Although they normally stay submerged, heavy rains can cause them to slither briefly across land.
Life Cycle and Egg Laying
How Baby Amphiumas Begin Life
The breeding season for these amphibians begins in winter and lasts until June. Unlike many other salamanders that lay eggs before they are fertilized, three-toed amphiumas use internal egg fertilization.
From April through October, mother amphiumas search for safe, hidden spots under logs or in underwater burrows. A mother lays about 200 eggs connected in a long, bead-like string. She stays coiled around her eggs to protect them from danger until they hatch.
Amazing Biology and Survival
Record-Breaking Cells
The three-toed amphiuma holds an exciting scientific record. It possesses the largest red blood cells known in the entire animal kingdom. These gigantic blood cells help carry oxygen through its body while it spends hours resting deep underwater.
Natural Predators
Even though amphiumas are skilled hunters, they must watch out for bigger animals in the swamp. Several types of water snakes love to hunt them. Their main enemies include brightly colored mud snakes, venomous cottonmouth snakes, and powerful king snakes. By hiding deep inside underground tunnels, amphiumas stay safe from these hungry predators.
