Animalia > Chordata > Amphibia > Caudata > Cryptobranchidae > Cryptobranchus > Cryptobranchus alleganiensis

Cryptobranchus alleganiensis (Hellbender)


Wikipedia Abstract

The hellbender (Cryptobranchus alleganiensis), also known as the hellbender salamander, is a species of aquatic giant salamander endemic to eastern North America. A member of the family Cryptobranchidae, hellbenders are the only members of the genus Cryptobranchus, and are joined only by one other genus of salamanders (Andrias, which contains the Japanese and Chinese giant salamanders) at the family level. These salamanders are much larger than any others in their range, they employ an unusual means of respiration (which involves cutaneous gas exchange through capillaries found in their dorsoventral skin folds), and they fill a particular niche—both as a predator and prey—in their ecosystems, which either they or their ancestors have occupied for around 65 million years. The species is lis
View Wikipedia Record: Cryptobranchus alleganiensis

Endangered Species

Status: Vulnerable
View IUCN Record: Cryptobranchus alleganiensis

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 92.49
EDGE Score: 5.23


Adult Length [2]  29 inches (73.66 cm)
Gestation [3]  72 days
Litter Size [3]  275
Litters / Year [2]  1
Maximum Longevity [3]  29 years
Water Biome [1]  Rivers and Streams
Adult Weight [3]  358 grams
Diet [2]  Carnivore (Invertebrates), Carnivore (Vertebrates)
Female Maturity [3]  5 years
Male Maturity [3]  5 years


Name Countries Ecozone Biome Species Report Climate Land
Allegheny Highlands forests United States Nearctic Temperate Broadleaf and Mixed Forests
Appalachian mixed mesophytic forests United States Nearctic Temperate Broadleaf and Mixed Forests
Appalachian-Blue Ridge forests United States Nearctic Temperate Broadleaf and Mixed Forests
Central U.S. hardwood forests United States Nearctic Temperate Broadleaf and Mixed Forests
Southern Great Lakes forests Canada, United States Nearctic Temperate Broadleaf and Mixed Forests

Protected Areas

Prey / Diet

Regina septemvittata (Queen Snake)[4]


Range Map

External References

NatureServe Explorer


Attributes / relations provided by
1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
2Oliveira, Brunno Freire; São-Pedro, Vinícius Avelar; Santos-Barrera, Georgina; Penone, Caterina; C. Costa, Gabriel. (2017) AmphiBIO, a global database for amphibian ecological traits. Sci. Data.
3de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
4COSEWIC Assessment and Status Report on the Queen Snake Regina septemvittata in Canada, Smith, K. 1999, Committee on the Status of Endangered Wildlife in Canada. Ottawa. 1-28 pp
5Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2023-06-13; License: CC BY 4.0