Elasmobranchii (hajar och rockor) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Holohalaelurus: holos (Gr.), whole or entire, i.e., being a form of Halaeurus without any labial folds or grooves in the mouth (See ETYFish); favus: Latin for honeycomb, referring to the color pattern of fresh specimens (See ETYFish).
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
marina pelagic-oceanic; djupintervall 200 - 1000 m (Ref. 75585). Subtropical
Western Indian Ocean: South Africa.
Size / Vikt / Age
Könsmognad: Lm ? range ? - ? cm
Max length : 51.5 cm TL hane/ej könsbestämd; (Ref. 75585); publicerad maxvikt: 301.30 g (Ref. 75585)
Short description
Bestämningsnycklar | Morfologi | Morfometri
This relatively large species is distinguished by the following characters: denticles on dorsal midline greatly enlarged from snout to second dorsal origin; denticles on pectoral fin dorsal surface greatly enlarged in adults; no club-shaped papillae on the distal tip of the clasper; buccal papillae in mouth large and prominent on upper and lower surfaces; moderate vertebral count, 124 total vertebrae in the holotype (123 total in paratype, mean 117.8); relatively high tooth counts, 65 total upper teeth in the holotype (66 in the paratype, mean 66.3), 70 total lower teeth in the holotype (58 in paratype, mean 60.3); covered in irregularly shaped spots and reticulations on a brown background, resembling a honeycomb pattern; white spots rarely present, if present, are inconspicuous (Ref. 75585).
Body shape (shape guide): elongated.
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Human, B.A., 2006. A taxonomic revision of the catshark genus Holohalaelurus Fowler 1934 (Chondrichthyes: Carcharhiniformes: Scyliorhinidae), with descriptions of two new species. Zootaxa 1315:1-56. (Ref. 75585)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 11.3 - 12.4, mean 11.4 °C (based on 6 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00175 - 0.00721), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 4.2 ±0.6 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (Preliminary low fecundity).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (41 of 100).
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