Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335); minispinosa: Name from the Latin adjective 'minispinosa' meaning full of small thorns; referring to the dorsal side of the disc with many minute fine prickles which are smooth to the touch (Ref. 75535).

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

Marine; demersal; depth range 150 - 1420 m (Ref. 50550). Temperate

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

North Pacific: Sea of Okhotsk off Abashiri, Japan to the Kamchatka Peninsula and the Bering Sea.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 82.5 cm TL male/unsexed; (Ref. 96339)

Short description Identification keys | Morphology | Morphometrics

This species is distinguished from its congeners in Bathyraja in having a whitish area along the inner margin of eyes; dorsal side of disc with minute fine prickles; pointed clasper with a pseudosiphon-like groove; dense, minute prickles covering smaller egg capsule (Ref. 75535).

Juveniles feed mainly on amphipods, adults feed on crabs and fish (Ref. 27640). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 7.6 cm long and 5.5 cm wide (Ref. 41249).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs have horn-like projections on the shell (Ref. 205).

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 03 June 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 0.8 - 3.6, mean 1.8 °C (based on 126 cells).

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

Bayesian length-weight: a=0.00468 (0.00303 - 0.00721), b=3.05 (2.92 - 3.18), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.8 ±0.66 se; based on food items.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (53 of 100).

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Bathyraja minispinosa Ishiyama & Ishihara, 1977