Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).

Environment / Climate / Range Ecology

Marine; demersal; depth range 1 - 170 m (Ref. 6871). Temperate, preferred ?; 32°S - 44°S

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

Eastern Indian Ocean: endemic to Australia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 170 cm TL male/unsexed; (Ref. 6871)

Short description Morphology | Morphometrics

Dorsal surface greyish or greyish brown with irregularly spaced white flecks, ventral surface cream or white, occasionally with greyish areas. Disc quadrangular, broader than long. Snout of moderate length, broadly rounded and knob-like at snout tip. Tail short, very depressed, broad; lateral skin folds prominent. A row of 1-5 thorns on nuchal and shoulder region, orbital and malar thorns absent. Alar thorns retractable. Tail with 1-3 rows of thorns, outer rows located near lateral margin.

Most abundant in shallow water near shore (Ref. 6871). Found over soft bottom (Ref. 7300, 75154). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Thorny tail can inflict a minor injury (Ref. 6871).

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

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).

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

Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)

IUCN Red List Status (Ref. 115185)

Vulnerable (VU) (A2bd+4bd)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Traumatogenic (Ref. 6871)

Human uses

FAO(Publication : search) | FisheriesWiki |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00309 (0.00140 - 0.00684), b=3.20 (3.02 - 3.38), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 4.0 ±0.6 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).

Vulnerability (Ref. 59153): Very high vulnerability (80 of 100) .

Entered by Sa-a, Pascualita

Modified by Ortañez, Auda Kareen

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