Holocephali (chimaeras) > Chimaeriformes
(Chimaeras) > Chimaeridae
(Shortnose chimaeras or ratfishes)
Etymology: Chimaera: Latin, chimaera = marine monster, 1634 (Ref. 45335); macrospina: Name from Greek 'makros' for long and Latin 'spina' for spine or thorn, refers to the very long dorsal spine which is taller than the first dorsal fin. More on authors: Didier, Last & White.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 435 - 1190 m (Ref. 76965). Temperate
Indo-West Pacific area of Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 93.9 cm TL male/unsexed; (Ref. 76965); 103.4 cm TL (female)
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
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. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00126 - 0.00759), b=3.10 (2.89 - 3.31), 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
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High vulnerability (56 of 100) .