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Holocephali (chimaeras) > Chimaeriformes (Chimaeras) > Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Chimaera: Named for the mythological creature composed of parts of multiple animals, referring to their odd mix of characteristics (See ETYFish); macrospina: macro-, from makros (L.), long; spina (L.), thorn or spine, referring to long dorsal spine, taller than dorsal fin (See ETYFish).
More on authors: Didier, Last & White.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathydemersal; depth range 435 - 1190 m (Ref. 76965). Temperate

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-West Pacific area of Australia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 93.9 cm TL male/unsexed; (Ref. 76965); 103.4 cm TL (female)

Short description Identification keys | Morphology | Morphometrics

This species is distinguished from its congeners by the following characters: skin thin and deciduous; color uniformly chocolate brown; preopercular and oral lateral line canals usually sharing a common branch; long dorsal spine, longer than first dorsal fin; adult male with short claspers (11-13% BDL), trifurcate, divided at about distal third of clasper; structure of the CO1 gene (Ref. 76965).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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Didier, D.A., P.R. Last and W.T. White, 2008. Three new species of the genus Chimaera Linnaeus (Chimaeriformes: 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. 76965)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 18 February 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Trophic ecology
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Length-weight rel.
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00331 (0.00137 - 0.00798), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.7 ±0.6 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): High vulnerability (62 of 100).

Chimaera macrospina Didier, Last & White, 2008