Holocephali (chimaeras) >
Chimaeriformes (Chimaeras) >
Rhinochimaeridae (Longnose chimaeras)
Etymology: Harriotta: [an]a- (L.), belonging to: per Goode & Bean (1896), in honor of Thomas Harriott (ca. 1560?1621), English astronomer, mathematician, ethnographer and translator, who published the first English work on American natural history (1588). (See ETYFish); raleighana: In honor of Sir Walter Raleigh (ca. 1554‒1618), “philosopher and explorer, by whom the first English scientific expedition was sent to the New World” (Raleigh funded a 1585 expedition to Roanoke Island, North Carolina, with Thomas Harriott [honored in the (See ETYFish).
More on authors: Goode & Bean.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range 200 - 3100 m (Ref. 117245), usually 500 - 2000 m (Ref. 97389). Deep-water; 65°N - 49°S, 121°W - 179°E
Eastern Atlantic: Iceland, Faeroe Islands, Rockall Trough along Ireland to northern France; Canary Islands and off Cap Blanc, Mauritania; Namibia and South Africa (Ref. 5578). Western Atlantic: Nova Scotia, Canada to Chesapeake Bay in USA; southern Brazil. North Pacific: off Japan and California, USA; also 100 km off southern Baja California. South Pacific: off New Zealand and Australia (Ref. 7300).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 120 cm OT male/unsexed; (Ref. 26346); 102.5 cm TL (female)
Short description
Morphology | Morphometrics
Dorsal
spines
(total): 1;
Anal
spines: 0;
Anal
soft rays: 0. This species is distinguished by the following characters: long, pointed, narrow, depressed snout; relatively large eyes (EYL 7.2-9.0% BDL) and virtually above the mouth (Ref. 97389); knobby tooth plates; a rather long first dorsal fin and spine (spine longer than height of first dorsal fin, DSA 1.3-1.4 times in D1H, Ref. 97389); caudal-fin axis weakly raised with the fin asymmetrical, epaxial caudal-fin lobe narrower than hypaxial lobe (Ref. 97389); upper edge of caudal fin without denticles or tubercles. caudal fin lanceolate with no tubercles on upper edge but with a long terminal filament (Ref. 5578, 6871, 41248).
Found on the continental slope and ocean floor (Ref. 26346). Appears to feed mainly on shellfish and crustaceans (Ref. 6871). Maximum length 120 cm without tail filament (Ref. 26346).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, young hatch at about 10-13 cm (Ref. 26346).
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN Red List Status (Ref. 125652)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
More information
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
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Estimates based on models
Preferred temperature (Ref.
115969): 0.3 - 9, mean 5.2 °C (based on 654 cells).
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.7539 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00257 (0.00159 - 0.00415), b=3.08 (2.94 - 3.22), in cm total length, based on LWR estimates for species & Subfamily-BS (Ref.
93245).
Trophic level (Ref.
69278): 3.6 ±0.50 se; based on food items.
Resilience (Ref.
120179): Low, minimum population doubling time 4.5 - 14 years (Assuming Fec <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (50 of 100) .
Climate Vulnerability (Ref.
125649): (0 of 100) .
