Hydrolagus purpurescens

• Overview
• Interesting Facts
• Common Names
• Description
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Overview

Family : Shortnose chimaeras or ratfishes ; Oviparous [1]. Eggs are encased in horny shells [1].

Interesting Facts

Common Names

Click on the language to view common names.

Description

Habitat

Biome: Marine [2].

Ecology: Benthopelagic species that lives on the upper to middle slope and deep seamounts and troughs . Occurs at depths of 920 to 1,130 m off Japan, with the type specimen collected from 1,750 to 1,951 m off Hawaii. May be more widespread in deeper waters.

Oviparous , although nothing is known of reproductive biology . Eggs , hatchlings and small juveniles are rarely if ever collected. Diet probably consists of a variety of benthic invertebrates . Like other large chimaeroids , this may be a slow-growing species with low fecundity .

Life history parameters
Age at maturity (years): Unknown.
Size at maturity (total/body length ): ~100 cm TL (~55 to 60 cm BDL).
Longevity (years): Unknown.
Maximum size (total/body length): 138 cm TL; 89 cm BDL (probably reaches ~150 cm TL).
Size at birth (cm): Unknown.
Average reproductive age (years): Unknown.
Gestation time (months): Unknown.
Reproductive periodicity: Unknown.
Average annual fecundity or litter size : Unknown.
Annual rate of population increase: Unknown.
Natural mortality: Unknown. (Ref. 278388).

List of Habitats :

•     10     Marine Oceanic   
  
•     10.1     Marine Oceanic - Epipelagic (0-200m)   
[more info]

Taxonomy

Synonyms

Chimaera gilberti Garman • Chimaera purpurescens Gilbert • Chimaera purpurescens Gilbert, 1905 • Hydrolagus eidolon • Hydrolagus purpurescens

Notes

Name Status: Accepted Name .

First described: Smith F. Gilbert The Habits of Asemum striatum and Criocephalus ferus. The Transactions of the Entomological Society of London 1905: 165-176., 1905.

Last scrutiny: Data last modified by FishBase 23-Jun-1998

This species is part of a complex of giant black or purple-black species of Hydrolagus, which includes H. affinis and all "affinis-like" species from Australia and New Zealand, South Africa and the southern Atlantic, and the Davison Seamount in the Eastern Central Pacific. The giant black Hydrolagus from the Atlantic is likely Hydrolagus affinis; however, the giant black or purple-black species of Hydrolagus from the Pacific may represent at least two separate species, one of which may be H. purpurescens.[2].

Similar Species

Members of the genus Hydrolagus

ZipcodeZoo has pages for 25 species and subspecies in this genus:

H. eidolon (Whitefin Wolf-Herring) · H. affinis (Smalleyed Rabbitfish Fish) · H. africanus (African Chimaera) · H. alberti (Gulf Chimaera) · H. alphus (Whitespot Ghostshark) · H. barbouri (Ninespot Chimaera) · H. bemisi (Pale Ghost Shark) · H. colliei (Pacific Ratfish) · H. deani (Philippine Chimaera) · H. homonycteris (Black Ghostshark) · H. lemures (Ghostly Scorpionfish) · H. macrophthalmus (Bigeye Chimaera) · H. marmoratus (Marbled Ghostshark) · H. matallanasi (Striped Rabbitfish) · H. mccoskeri (Galapagos Ghostshark) · H. melanophasma (Eastern Pacific Ghostshark) · H. mirabilis (Large-Eyed Rabbitfish) · H. mitsukurii (Ghost Shark) · H. novaezealandiae (Dark Electric Ray) · H. novaezelandiae (Dark Ghost Shark) · H. ogilbyi (Waite's Ghost Shark) · H. pallidus (Pale Chimaera) · H. purpurescens (Purple Ghostshark) · H. trolli (Pointy-Nosed Blue Chimaera) · H. waitei (Payara)

More Info

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Further Reading

• Didier, Dominique A. 1995. Phylogenetic Systematics of Extant Chimaeroid Fishes (Holocephali, Chimaerodei). American Museum Novitates (3119). American Museum of Natural History. New York, New York, U.S.A. 1-86.
• Eschmeyer, William N., ed. 1998. Catalog of Fishes. Special Publication of the Center for Biodiversity Research and Information, no. 1, vol 1-3. California Academy of Sciences. San Francisco, California, USA. 2905. ISBN: 0-940228-47-5.
• Gilbert, C.H. 1905. Deep sea fishes of the Hawaiian Islands. In: D.S. Jordan & B.W. Evermann. The Aquatic Resources of the Hawaiian Islands. Bulletin of the U.S. Fish Commission for 1903. 23:575?713.
• IUCN SSC Shark Specialist Group. Specialist Group website. Available at: http://www.iucnssg.org/.
• IUCN. 2006. 2006 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 04 May 2006.
• Jordan, D.S. and Hubbs, C.L. 1925. Record of fishes obtained by David Starr Jordan in Japan, 1922. Memoirs of the Carnegie Museum 10:93.
• Jordan, D.S. and Snyder, J.O. 1904. On a collection of fishes made by Mr. Alan Owston in the deep waters of Japan. Smithson Miscellaneous Collections 45:230?240.
• Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino (1984). The fishes of the Japanese Archipelago. Vol. 1 (text). Tokai University Press, Tokyo, Japan. 437 p. (text), 370 pls.
• Nakaya, K. 1983. In: K. Amaoka, K. Nakaya, H. Araya & T. Yasui (eds). Fishes from the north-eastern Sea of Japan and the Okhotsk Sea off Hokkaido. Japan Fisheries Resource Conservation Association.
• Shark Specialist Group. For more information, see the Specialist Group website.
• Shiino, Sueo M. 1976. List of Common Names of Fishes of the World, Those Prevailing among English-speaking Nations. Science Report of Shima Marineland, no. 4. Shima Marineland. Kashikojima, Shima, Mie, Japan. 262.
• Smith F. Gilbert The Habits of Asemum striatum and Criocephalus ferus. The Transactions of the Entomological Society of London 1905: 165-176., 1905.
• Tinker, S.W. (1978). Fishes of Hawaii, a handbook of the marine fishes of Hawaii and the Central Pacific Ocean. Hawaiian Service Inc., Honolulu. 568 p.

Notes

Contributors

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 15, 2012.
• Dagit, D.D. 2006. Hydrolagus purpurescens. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloadedon 01February2012.
• Dagit, D.D. 2006. In IUCN 2008. 2008 IUCN Red List of Threatened Species. IUCNRedList.org. Downloaded July 18, 2008.
• FishBase
• FishBase. Release date: January 5, 2010
• Heemstra, Phillip C. (from FishBase).
• IUCN 2012. IUCN Red List of Threatened Species. Version 2011.2. . Downloaded on January 28, 2012.
• Ruggiero M., Gordon D., Bailly N., Kirk P., Nicolson D. (2011). The Catalogue of Life Taxonomic Classification, Edition 2, Part A. In: Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist (Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D., eds). DVD; Species 2000: Reading, UK.

Identifiers

• Biodiversity Heritage Library NamebankID: 129181
• Catalogue of Life Accepted Name Code: Fis-26520
• Fishbase Species ID: 7378
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 161018
• IUCN ID: 214917
• Zipcode Zoo Species Identifier: 113367

Footnotes

1. Breder, C.M. and D.E. Rosen (1966). Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p. [back]
2. Dagit, D.D. 2006. Hydrolagus purpurescens. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 01 February 2012. [back]

©2004-2012 David Stang. All rights reserved.