Australia country information

Common names: Dusky catshark
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Type locality, mid-continental slope, south of Roti Island, Ashmore Terrace, Western Australia, CSIRO H 1204-02 (holotype of Bythaelurus incanus, 45.4 cm SL, juvenile male).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: http://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Last, P.R. and J.D. Stevens, 2008
National Database:

Common names from other countries

Dusky catshark, Sünk nõlvahai, ... more

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranquios (tiburones y rayas) (sharks and rays) > Carcharhiniformes (Ground sharks) > Pentanchidae (Deepwater catsharks)
Etymology: Bythaelurus: bythos (Gr.), depths of the sea, referring to its deepwater habitat; ailouros (Gr.), cat, probably an allusion to the vernacular “catshark,” so named for its cat-like eyes. (See ETYFish); incanus: Latin for quite gray, referring to its body and fin coloration. (See ETYFish).
More on authors: Last & Stevens.

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

marino batidemersal; rango de profundidad 900 - 1000 m (Ref. 76945). Deep-water

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Eastern Indian Ocean: Australia.

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 45.4 cm TL macho / no sexado; (Ref. 76945)

Short description Claves de identificación | Morfología | Morfometría

This species possess the following set of characters: short and broad head, its width 13.5% TL, length 19.1% TL; short snout, broadly rounded, its length 2.5 in head length; triangular anterior nasal flaps; large mouth, its width 10.3% TL, length 4.6% TL; short labial furrows confined to mouth corners; small papillae on roof of mouth; elongate abdomen, the pectoral-pelvic space 2.8 times length of pectoral-fin anterior margin, 1.7 times interdorsal space; distance of pre-dorsal about 42% TL, 10.9 times eye length; distance of anal-caudal 6.3% TL; origin of first dorsal-fin slightly behind origin of pelvic fin, while the origin of the second is well behind anal-fin mid-base; length of anal-fin base 1.2 times the second dorsal-fin base length, subequal to interdorsal space; weakly tricuspidate flank denticles, very slender crowns, their length more than twice their width; minute teeth mainly with 4 small cusps, central pair longer than those adjacent, about 100 rows in each jaw; upright flank denticles weakly tricuspidate; precaudal centra about 93, before upper caudal-fin origin; uniformly greyish brown body (Ref. 76945).

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Last, P.R. and J.D. Stevens, 2008. Bythaelurus incanus sp. nov., a new deepwater catshark (Carcharhiniformes: Scyliorhinidae) from Northwestern Australia. pp. 123-128. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of New Australian Chondrichthyans. CSIRO Marine and Atmospheric Research Paper no. 22. (Ref. 76945)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 30 April 2015

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FishSource |

Más información

Trophic ecology
componentes alimenticios
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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Datos específicos | Nombres comunes | Photos

Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00355 (0.00176 - 0.00714), b=3.09 (2.91 - 3.27), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Nivel trófico (Ref. 69278): 4.3 ±0.5 se; based on size and trophs of closest relatives

Resiliencia (Ref. 120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Preliminary low fecundity).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (35 of 100).

Bythaelurus incanus Last & Stevens, 2008