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Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Anacanthobatidae (Smooth skates)
Etymology: caerulea: Name from Latin ‘caeruleus’, allusion to its blue dorsal and ventral coloration.
More on authors: Last & Séret.

Issue
Provisionally placed in Sinobatis in the absence of adult males being available for examination (Ref. 75174).

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

Marine; bathydemersal; depth range 482 - 1168 m (Ref. 75174). Tropical; 21°S - 26°S, 111°E - 114°E (Ref. 75174)

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Eastern Indian Ocean: off Western Australia (Refs. 75174, 114953).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 69.0 cm TL male/unsexed; (Ref. 75174)

Short description Identification keys | Morphology | Morphometrics

This species is distinguished by the following set of characters: disc large, width at anterior orbit 8.0-9.1 times mouth width; tail short, postcloacal length 35-42% of disc length; eyes relatively small, orbit diameter 10.9-15.7 in horizontal snout and 13.1-17.9 in head lengths respectively; distal portion of tail weakly or slightly expanded, width of tail near tip 1.5-1.6 times tail width at its midlength; pectoral-fin radials 72-76; moderate-sized pelvic fins, anterior lobe 15.4-16.0% TL; anterior pelvic-fin lobe rather broad-based, width 1.7-2.2 in distance between pelvic-fin origins; caudal fin rudimentary; tooth rows in each jaw of adults 24-30; monospondylous vertebral centra 26-29, total centra 184-212; dorsal and ventral surfaces bluish in fresh specimens (Ref. 75174)..

Found on upper continental slope. Life history unknown but presumably feeds on invertebrates and bony fishes (Ref. 114953).

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

Main reference Upload your references | References | Coordinator | Collaborators

Last, P.R. and B. Séret, 2008. Three new legskates of the genus Sinobatis (Rajoidei: Anacanthobatidae) from the Indo-West Pacific. Zootaxa 1671:33-58. (Ref. 75174)

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

Data deficient (DD) ; Date assessed: 19 February 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 4.7 - 5.6, mean 5.1 °C (based on 9 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.8 ±0.7 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (48 of 100).

Sinobatis caerulea Last & Séret, 2008