Holocephali (chimaeras) > Chimaeriformes
(Chimaeras) > Rhinochimaeridae
Etymology: Rhinochimaera: Greek, rhinos = nose + Latin, chimaera = marine monster, 1634 (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 330 - 1490 m (Ref. 26346). Deep-water; 46°N - 50°S
Pacific Ocean: Japanese Archipelago to the South China Sea, and off Australasia and Peru.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 100 - ? cm
Max length : 165 cm OT male/unsexed; (Ref. 89422)
Morphology | Morphometrics
soft rays: 0. Pale brown dorsally, grey-brown ventrally; snout and front of head white (Ref. 26346). A spookfish with a very long, narrow, conical snout, a small eye situated behind the mouth, a rather long first dorsal fin and spine, relatively smooth tooth plates, and with the lower caudal-fin lobe longer than the upper lobe (Ref. 6871).
Found on the continental slope (Ref. 7300). Maximum length 130 cm without caudal filament (Ref. 26346). Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 5 - 9.8, mean 7.1 °C (based on 517 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6289 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00245 (0.00098 - 0.00614), b=3.14 (2.91 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming Fec <100).
Vulnerability (Ref. 59153
): High to very high vulnerability (67 of 100) .