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- Australian Faunal Directory
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Following modified from Australian Faunal Directory
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Following modified from FishBase
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https://www.fishbase.in/Summary/speciesSummary.php?genusname=Hydrolagus&speciesname=homonycteris ---> https://www.fishbase.in/summary/Hydrolagus-homonycteris.html
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Common name (e.g. trout)
Genus + Species (e.g. Gadus morhua)
No image available for this species;
drawing shows typical fish in this Family.
Classification / Names
| Catalog of Fishes (
Holocephali (chimaeras) >
(Shortnose chimaeras or ratfishes)
Greek, hydr = water + Greek, lagos = hare (Ref.
Name from the Latin 'homo' for man and 'nycteris' for bat; named for Thomas A. Griffiths, Illinois Wesleya University, affectionately known as 'bat man' to his students.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 866 - 1447 m (Ref.
Southern Ocean: Australia and New Zealand.
Length at first maturity / Size / Weight / Age
, range 85 - ? cm
Max length : 109 cm TL male/unsexed; (Ref.
This chimaeroid fish has a ventral caudal fin that that is not indented at its origin to form a separate anal fin, it is distinguished from its congeners by the following characters: color of the body an even dark black or blackish-brown; its dorsal fin spine is longer than height of first dorsal fin; pelvic fins is distinctly round in shape; males with pelvic claspers that are dark at the base with pale tips, divided for the distal 1/3 of their length (Ref.
Life cycle and mating behavior
, 2008. Two new species of the genus
Gill (Holocephali: Chimaeridae) from Australia. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of New Australian Chondrichthyans. CSIRO Marine and Atmospheric Research Paper no. 22. (Ref.
IUCN Red List Status (Ref.
Least Concern (LC)
; Date assessed:
19 February 2015
Threat to humans
Stamps, Coins Misc.
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Websites from users
Catalog of Fishes
) | GloBI |
| IGFA World Record |
Otolith Atlas of Taiwan Fishes
| Reef Life Survey |
Tree of Life
) | World Records Freshwater Fishing |
Estimates of some properties based on models
Preferred temperature (Ref.
): 2.2 - 5.7, mean 4.6 (based on 177 cells).
Phylogenetic diversity index (Ref.
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00316 (0.00154 - 0.00648), b=3.08 (2.90 - 3.26), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
Trophic Level (Ref.
): 3.8 ±0.6 se; Based on size and trophs of closest relatives
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
): High vulnerability (60 of 100) .
Capuli, Estelita Emily
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