Cynops pyrrhogaster
Cynops pyrrhogaster
(Japanese Fire-bellied Salamander)
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Cynops pyrrhogaster (Boie, 1826)

Common name: Japanese Fire-bellied Salamander

Synonyms and Other Names: Japanese fire belly newt

Taxonomy: available through www.itis.govITIS logo

Identification: The Japanese fire belly salamander is rough bodied with brown-black skin and an orange to red belly spotted with black (Okada, 2000).

Size: 8-15 cm total body length

Native Range: C. pyrrhogaster is native throughout Japan, with the exception of Hokkaido and
the southern Ryukyu Islands (T. Johnson, pers. comm.).

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Nonindigenous Occurrences: Two C. pyrrhogaster were collected from Ward's Pond, Plymouth County, Massachusetts in 1932 (Cardoza et al., 1993). An additional escaped pet was collected in 1979 from Stoneham, Middlesex County, Massachusetts (Cardoza et al.,1993). In 1964, C. pyrrhogaster were released into Hialeah (Red Road) Canal, Miami-Dade County, Florida (King and Krakauer, 1966).

Means of Introduction: The Massachusetts introductions were released or escaped pets and the Florida introduction was intentionally released by an animal dealer (King and Krakauer, 1966; Cardoza et al., 1993).

Status: The introductions in Florida and Massachusetts did not result in an established populations (Cardoza et al., 1993)

Impact of Introduction: Since the salamanders did not become established, no impacts have been documented.

Remarks: In Japan, C. pyrrhogaster are found in ponds, rice fields, swamps and streams. They eat aquatic insects and tadpoles. The more terrestrial juveniles can be found under logs, rocks and leaf piles (Okada, 2000).

References: (click for full references)

Cardoza, J. E., G. S. Jones, T. W. French, and D. B. Halliwell. 1993. Exotic and Translocated Vertebrates of Massachusetts. Fauna of Massachusetts Series 6. Massachusetts Division of Fisheries and Wildlife, Westborough, Massachusetts. 106 pp.

Johnson, T. - Caudata Culture.

King, [F.] W., and T. Krakauer. 1966. The exotic herpetofauna of southeast Florida. Quarterly Journal of the Florida Academy of Sciences 29(2):144-154. 2002. Japanese Fire Belly Newt (Boie, 1826)(online). Available at URL:

Okada, S. 2000. Herps Guide in Hioshima Japan (online). Available at URL:

Author: McKercher, E.

Revision Date: 8/12/2015

Citation Information:
McKercher, E., 2018, Cynops pyrrhogaster (Boie, 1826): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL,, Revision Date: 8/12/2015, Access Date: 2/18/2018

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.

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Citation information: U.S. Geological Survey. [2018]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/18/2018].

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