Bythaelurus giddingsi, Galápagos catshark

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Bythaelurus giddingsi McCosker, Long & Baldwin, 2012

Galápagos catshark
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Native range | All suitable habitat | Point map | Year 2050
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Bythaelurus giddingsi   AquaMaps   Data sources: GBIF OBIS
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Image of Bythaelurus giddingsi (Galápagos catshark)
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drawing shows typical species in Pentanchidae.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (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);  giddingsi: In honor of Al Giddings (b. 1937), American underwater filmmaker, naturalist, and friend. (See ETYFish).
More on authors: McCosker, Long & Baldwin.

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

Marine; bathypelagic; depth range 428 - 562 m (Ref. 89625). Tropical

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

Pacific Ocean: presumed to be endemic to the Galápagos Islands.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 45.3 cm TL male/unsexed; (Ref. 89625)

Short description Morphology | Morphometrics

This species is moderately sized and have the following characters: snout bluntly rounded; preoral length 4.7-6.8% TL; short head, length about equal to pectoral-pelvic space, 21-24% TL; precaudal length 73-80% TL; dorsal and anal fins are subequal; length of anal-fin base about equal to length of interdorsal space; 81-85 (mean = 82.6) precaudal vertebrae; color chocolate brown dorsally, paler on ventral surface from snout to anus; body, flanks, caudal and median fins are overlain with pale spots about equal in size to eye, becoming smaller below lateral midline, and showing a bilaterally asymmetrical pattern. It differs from its congeners in its coloration, the length of its anal-fin base, and in other morphological characters (Ref. 89625).

Biology     Glossary (e.g. epibenthic)

This species were observed living on the bottom above sand or sand and mud substrates, in the vicinity of lava boulders, either over flat bottoms or along slopes to 45° (Ref. 89625).

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

Main reference Upload your references | References | Coordinator | Collaborators

McCosker, J.E., D.J. Long and C.C. Baldwin, 2012. Description of a new species of deepwater catshark, Bythaelurus giddingsi sp. nov., from the Galápagos Islands (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Zootaxa 3221:48-59. (Ref. 89625)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 08 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

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Common names
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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 2.6 - 3.3, mean 3.1 °C (based on 9 cells).
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).
Trophic level (Ref. 69278):  4.3   ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (35 of 100).