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Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Skates)
Etymology: aenigma: Name from Latin 'aenigma' or enigma, in allusion to its unresolved taxonomic status.. More on author: Last.

Environment / Climate / Range Ecology

Marine; bathydemersal; depth range ? - 437 m (Ref. 58023). Deep-water, preferred ?

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

Western Pacific: New Zealand.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 43.6 cm TL male/unsexed; (Ref. 58023)

Short description Morphology | Morphometrics

A species of Brochiraja with the following combination of characters: rounded disc; very long tail, 1.5 times disc length, 2.9 times ventral head length, 6.8 times snout length; orbit moderately large, 2.4 in preorbital snout length; calcified rostral shaft very short; tail base narrow, width at pelvic fin insertions 2 times width at midlength; dermal denticles closely spaced, over entire upper disc; mid-dorsal surface of tail with thorns and denticles; dorsolateral surface of tail without thorns; orbital thorns absent; entire ventral surface naked; medium brownish with darker mottling above and below; indistinct rows of pale-edged pores on ventral surface; nuchal pore band indistinct; anterior pelvic fin lobe bulbous, black tipped; total pectoral radials 73-74; predorsal vertebrae 115; c. 30 tooth rows in upper jaw (Ref. 58023).

Known only from a single specimen; no information on mature males or juveniles (Ref. 58023).

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

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

Last, P.R. and J.D. McEachran, 2006. New softnose skate genus Brochiraja from New Zealand (Rajidae: Arhynchobatinae) with description of four new species. N. Z. J. Mar. Freshwater Res. 40(1):65-90. (Ref. 58023)

IUCN Red List Status (Ref. 115185)

Data deficient (DD)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FisheriesWiki |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00513 (0.00253 - 0.01042), b=3.12 (2.95 - 3.29), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

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

Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

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

Entered by Capuli, Estelita Emily

Modified by Bailly, Nicolas

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Brochiraja aenigma Last & McEachran, 2006