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Bythaelurus naylori Ebert & Clerkin, 2015

Dusky snout catshark
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Image of Bythaelurus naylori (Dusky snout catshark)
Bythaelurus naylori
Male picture by Ebert, D.A.

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

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Scyliorhinidae (Cat sharks)
Etymology: naylori: Named for Gavin Naylor, College of Charleston.

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

Marine; demersal; depth range 89 - 1443 m (Ref. 102637).   Deep-water; 33°S - 37°S, 55°E - 56°E (Ref. 102637)

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

Southwestern Indian Ocean: Southwest Indian Ridge.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 51.1 cm TL male/unsexed; (Ref. 102637); 54.8 cm TL (female)

Short description Morphology | Morphometrics

Vertebrae: 114 - 128. This moderately-sized species is distinguished by the following set of characters: short snout and bluntly rounded; preoral length 4.2-5.5% TL; oral cavity without papillae on the roof of the mouth and tongue; anal-fin base length is equal to or less than 1.5 times second dorsal-fin base length; upper caudal-fin margin with distinct enlarged dermal denticles; body colouration uniformly plain medium to dark brown, with light fin edges and a distinct dark dusky-colored snout (Ref. 102637)..

Biology     Glossary (e.g. epibenthic)

Collected by bottom trawls and midwater trawls. Maturity size for females at 48.1 cm TL and are immature at 43.0 cm TL, males at 45.2 cm and immature at 38.0 cm TL (Ref. 102637).

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

Main reference Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators

Ebert, D.A. and P.J. Clerkin, 2015. A new species of deep-sea catshark (Scyliorhinidae: Bythaelurus) from the southwestern Indian Ocean. J. Ocean. Sci. Found. 15:53-63. (Ref. 102637)

IUCN Red List Status (Ref. 120744)

  Not Evaluated 

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO(Publication : search) | FishSource |

More information

Countries
FAO areas
Ecosystems
Occurrences
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Ecology
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Food items
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Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
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Spawning
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Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
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References
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Aquaculture profile
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Pictures
Stamps, Coins Misc.
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
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Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00169 - 0.00649), b=3.14 (2.96 - 3.32), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.4   ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (49 of 100) .