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

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Pseudotriakidae (False catsharks)
Etymology: Gollum: Taken from a personnage of the J.R.R.Tolkien works "The Lord of the rings".

Environment / Climate / Range Ecology

Marine; bathydemersal; depth range 120 - 660 m (Ref. 26346), usually 400 - 600 m (Ref. 13566). Deep-water; - 46°S

Length at first maturity / Size / Weight / Age

Maturity: L_m ?, range 70 - ? cm
Max length : 107 cm TL male/unsexed; (Ref. 6893); 109.2 cm TL (female)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Caudal fin without a rippled dorsal margin and ventral lobe but with a strong subterminal notch; vertebral axis of caudal fin little raised above body axis (Ref. 13566).

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

Southwest Pacific: occurs off New Zealand and on rises between New Zealand and the east coast of Australia, New Caledonia, and Fiji just south of the Western Central Pacific. Placement in Proscyllidae provisional, probably will be relocated in Pseudotriakidae.

An uncommon to common deep-water bottom-dwelling shark found on the outermost continental shelf and upper slope of New Zealand and on adjacent seamounts and submarine banks (Ref. 13566). Seems adapted to waters of about 10°C and 34.8 ppt salinity (Ref. 6893). Feeds on a wide variety of fishes, cephalopods, and other invertebrates (Ref. 13566). Probably in schools (Ref. 13566). Females grow slightly larger than males (Ref. 13566). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother, uterine milk is consumed additionally (Ref. 50449). Two young are born per litter (Ref. 13566).

Main reference Upload your references | References | Coordinator | Collaborators

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO.

IUCN Red List Status (Ref. 90363)

Least Concern (LC)

Threat to humans

Harmless (Ref. 13566)

Human uses

Fisheries: of no interest

FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.8125 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00367 (-0.21058 - 0.21793), b=3.12 (3.00 - 3.23), based on LWR estimates for this family-BS (Ref. 93245).

Trophic Level (Ref. 69278): 4.2 ±0.7 se; Based on diet studies.

Resilience (Ref. 69278): Very Low, minimum population doubling time more than 14 years (Fec=2).

Vulnerability (Ref. 59153): Moderate vulnerability (40 of 100) .

Price category (Ref. 80766): Unknown.

Gollum attenuatus (Garrick, 1954)