Benthobatis yangi, Taiwanese blind electric ray

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Benthobatis yangi Carvalho, Compagno & Ebert, 2003

Taiwanese blind electric ray
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drawing shows typical species in Narcinidae.

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

Elasmobranchii (sharks and rays) > Torpediniformes (Electric rays) > Narcinidae (Numbfishes)
Etymology: Benthobatis: Greek, benthos = depth of the sea + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335);  yangi: Named for Hung-Chia Yang, Taiwanese Fisheries Research Institute in Kao-Hsiung..

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

Marine; bathydemersal; depth range ? - 300 m (Ref. 114953). Temperate

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

Northwest Pacific: Taiwan.

Length at first maturity / Size / Weight / Age

Maturity: Lm 20.3, range 19 - 21.5 cm
Max length : 21.5 cm TL male/unsexed; (Ref. 75959)

Short description Morphology | Morphometrics

This species is distinguished from all its congeners by the following unique set of characters: both dorsal and ventral surfaces dark brown to purplish-black, with irregular whitish blotches ventrally; narrow nasoral region, with relatively small mouth, slender jaws and shallow circumoral groove; relatively small spiracles; very narrow gill-slits; the second dorsal fin is slightly larger than first, with more slanted anterior margin, broadly rounded apex, and convex posterior margin; low caudal fin, relatively elongated; interdorsal distance greater than distance between second dorsal and caudal fin; suprascapula very narrow and not arched posteriorly; males sexually mature between 19.1-21.5 cm TL; relatively high number of caudal vertebral centra (38-46), total vertebral centra (116-120) (Ref. 75959).

Biology     Glossary (e.g. epibenthic)

A benthic species found on continental slope. Mainly feeds on polychaete worms (Ref. 114953). Stomach contents include mud and the partial remains of an unidentified polychaete worm, plus unattached polychaete bristles and unidentified small white objects (Ref. 75959). Maturity size of males at 16-19 cm TL (Ref. 114953).

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

Main reference Upload your references | References | Coordinator : Carvalho, Marcelo | Collaborators

de Carvalho, M.R., L.J.V. Compagno and D.A. Ebert, 2003. Benthobatis yangi, a new species of blind electric ray from Taiwan (Chondrichthyes: Torpediniformes: Narcinidae). Bull. Mar. Sci. 72(3):923-939. (Ref. 75959)

IUCN Red List Status (Ref. 130435)

  Vulnerable (VU) (A2d); Date assessed: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Spawning aggregation
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
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BRUVS
References
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Stamps, Coins Misc.
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Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
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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 | National databases | 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

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00476 - 0.02897), b=2.88 (2.66 - 3.10), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (12 of 100).