Mudpuppy
Scientific Name: Necturus maculosus
Size: 8-13 inches (20-33 cm) in length
PA Status: Species of special concern
PAHERP Resource: Monsters in the Water
Habitat Type:
Clear open lakes with sandy bottoms, ponds, and fast-flowing streams and creeks.
Colorations:
- The dorsal background color is greyish brown, reddish brown to black and becomes lighter on the sides of the body down to the lateral margins of the ventral.The dorsal has a series of irregular blotches. Small blotches may extend onto the posterior dorsal on the head.
- The ventral is beige or cream to pinkish grey and sometimes may be covered with small bluish black blotches.
- The head has a dark stripe that extends from the nares though the eyes and ends at the gills.
Characteristics:
- Large and stout species; permanently aquatic.
- The body is stout and somewhat dorsolaterally compressed.
- The head is flat and broadest just behind the eyes and tapers to a truncated snout.
- The eyes are small, dark and lidless.
- There are three pairs of bushy external gills that are present at the junction of the neck and head.
- The legs are small and not well-developed.
- The feet have four toes.
- The tail is short and strongly compressed laterally with a distinct caudal fin.
Larvae coloration and characteristics:
- The dorsal is dark with lateral stripes that are separated by pale yellowish cream to light greenish stripes.
- The tail is long.
- The ventral is immaculated cream or beige.
Hatchling coloration and characteristics:
- The dorsal had a dark band that extends down the midline of the back that is bordered by a light yellow stripe. A dark broad band occurs below the yellow stripes.
- The yolk sac is present.
Confused with:
- Hellbender
Coloration/Pattern Photos:
Adults
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Range Map:

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References:
- Hulse, C. and McCoy C. J. and Ellen Censky ,1998. Amphibians and Reptiles of Pennsylvania and the Northeast. 44-48pp.
- Petranka, James W. ,1998. Salamanders of the United States and Canada. 425-429pp.
Photo Credits:
- Jeff Hankey
- Rex Everett

