Common Mudpuppy (Necturus maculosus) in natural habitat
📸 FaunaWiki Verified Wildlife Photo

Common Mudpuppy

Scientific Name: Necturus maculosus
⚔️ Compare
🛡️

IUCN Conservation Status: Least Concern

The Common Mudpuppy (Necturus maculosus) is cataloged as Least Concern on the official IUCN Red List of Threatened Species.

⚡ Key Facts & Quick Answers (AEO Summary)

  • Taxonomic Class: Amphibians (Amphibia)
  • Dietary Niche: Carnivore (Crayfish, aquatic insects, worms, small fish)
  • Max Speed: 4 km/h (2.5 mph) swimming
  • Adult Weight: 120 - 300 grams
  • Typical Lifespan: 15 - 20 years
  • Primary Habitat: Lakes, sluggish rivers, marshes, rocky stream beds
  • Native Region: Eastern North America
  • IUCN Red List: Least Concern

📊 Physical & Biological Metrics

Class
Amphibians (Amphibia)
Diet Type
Carnivore (Crayfish, aquatic insects, worms, small fish)
Habitat
Lakes, sluggish rivers, marshes, rocky stream beds
Lifespan
15 - 20 years
Adult Weight
120 - 300 grams
Top Speed
4 km/h (2.5 mph) swimming
🌎
Geographic Range & Distribution
Eastern North America
Native Biome: Lakes, sluggish rivers, marshes, rocky stream beds

🧬 Scientific Taxonomy & Biological Classification

Kingdom Animalia
Phylum Chordata
Class Amphibia
Order Urodela
Family Proteidae
Genus Necturus
Species Binomial Necturus maculosus

📖 1. Species Overview

The Mudpuppy is a large, fully aquatic salamander. Unlike most amphibians that undergo metamorphosis, they exhibit neoteny, retaining their feathery external gills throughout their entire lives.

🦿 2. Physical Appearance, Anatomy & Adaptations

Has an elongated grey-brown body, large feathery red external gills, four short limbs, and flat paddle tail.

🗺️ 3. Habitat, Geographic Distribution & Territorial Range

Strictly aquatic. They hide under flat rocks during the day and are active at night, even under winter ice sheets.

🥩 4. Diet, Feeding Strategy & Hunting Tactics

Crawl along stream beds, vacuuming up crayfish and water insects with a quick strike.

🐣 5. Reproduction, Lifecycle & Social Hierarchy

Females lay clutches of 30-100 eggs under flat river stones, guarding them until they hatch.

🛡️ 6. Conservation Status, Population Threats & Protection

Least Concern, though threatened locally by water pollution and chemical runoff.

💡 Fascinating Facts & Trivia

  • Their feathery gills will grow larger and redder in stagnant, low-oxygen waters to absorb more oxygen.
  • The name 'Mudpuppy' comes from the old belief that they make barking sounds, though they are completely silent.

❓ Frequently Asked Questions (FAQ)

Direct authoritative answers regarding the biology, feeding habits, and habitat of the Common Mudpuppy.

What is the scientific taxonomy of the Common Mudpuppy? ▼

The Common Mudpuppy is scientifically classified as Necturus maculosus. It belongs to the genus Necturus within the family Proteidae, class Amphibia, and phylum Chordata.

Where does the Common Mudpuppy live in the wild? ▼

In the wild, Common Mudpuppys inhabit Lakes, sluggish rivers, marshes, rocky stream beds. Their native geographic range primarily spans Eastern North America.

What do Common Mudpuppys eat in their natural habitat? ▼

The Common Mudpuppy is classified as a Carnivore. It feeds primarily on specialized nutrients suited to its ecological niche in Lakes, sluggish rivers, marshes, rocky stream beds.

How fast can a Common Mudpuppy move, and what is its typical size? ▼

A Common Mudpuppy can achieve top speeds of 4 km/h (2.5 mph) swimming and weighs approximately 120 - 300 grams. Its expected natural lifespan is 15 - 20 years.

What is the IUCN conservation status of the Common Mudpuppy? ▼

The Common Mudpuppy (Necturus maculosus) is currently designated as Least Concern on the IUCN Red List of Threatened Species.

Cite this Article

FaunaWiki Zoological Database (2026). "Common Mudpuppy (Necturus maculosus) Species Profile."

🐾 Related Species & Co-inhabitants

Red-eyed Tree Frog (Agalychnis callidryas) Amphibians (Amphibia)

Red-eyed Tree Frog

Least Concern
Agalychnis callidryas

The red-eyed tree frog is a vibrant, iconic inhabitant of Central and South American rainforests. With its bright green body, blue-and-yellow striped flanks, orange webbed feet, and striking, blood-red eyes, it is a master of color. During the day, it tucks its legs close and closes its eyes to blend in with green leaves. If disturbed, it flashes its bright colors and bulging red eyes to startle predators, a defense mechanism known as 'startle coloration'.

Poison Dart Frog (Dendrobatidae) Amphibians (Amphibia)

Poison Dart Frog

Vulnerable
Dendrobatidae

The Poison Dart Frog is a group of small, brightly colored amphibians native to the tropical rainforests of Central and South America. They are famous for their extremely toxic skin secretions, which indigenous tribes have used for centuries to poison the tips of blowdarts. Their brilliant, vibrant coloration serves as an warning sign to warn predators of their toxicity. Despite their name, captive-bred poison dart frogs are entirely harmless as their toxicity is derived from their wild diet.

Axolotl (Ambystoma mexicanum) Amphibians (Amphibia)

Axolotl

Critically Endangered
Ambystoma mexicanum

The axolotl, also known as the Mexican walking fish, is a unique salamander famous for its smiling appearance and remarkable regenerative abilities. Unlike most amphibians, axolotls exhibit 'neoteny', meaning they never undergo metamorphosis to become land-dwelling adults. Instead, they remain aquatic, keeping their larval features—like feathery external gills and a tail fin—throughout their entire lives. They are highly studied by scientists because they can regenerate entire limbs, spinal cords, and even parts of their hearts and brains without scarring.