''Narcine'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

electric ray The electric rays are a group of rays, flattened cartilaginous fish with enlarged pectoral fins, composing the order Torpediniformes . They are known for being capable of producing an electric discharge, ranging from 8 to 220 volts, depending ...

s in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Narcinidae Narcinidae, or numbfishes, are a family of electric rays (order Torpediniformes). They are bottom-dwelling cartilaginous fishes with large, rounded pectoral fin discs and long tails. They can produce an electric discharge for defense, from whi ...

. These

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

have a rounded

pectoral fin Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish aquatic locomotion, swim. Apart from the tail or caudal fin, fish fins have no direct connection with the vertebral column ...

disc and two

dorsal fin A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found ...

s, the first usually smaller than the second and placed behind the

pelvic fin Pelvic fins or ventral fins are paired fins located on the ventral (belly) surface of fish, and are the lower of the only two sets of paired fins (the other being the laterally positioned pectoral fins). The pelvic fins are homologous to the hi ...

bases. The

tail The tail is the elongated section at the rear end of a bilaterian animal's body; in general, the term refers to a distinct, flexible appendage extending backwards from the midline of the torso. In vertebrate animals that evolution, evolved to los ...

is longer than the disc and has a lateral fold. The spiracles are close behind the eyes, the nasal flaps are merged into a flap in front of the

mouth A mouth also referred to as the oral is the body orifice through which many animals ingest food and animal communication#Auditory, vocalize. The body cavity immediately behind the mouth opening, known as the oral cavity (or in Latin), is also t ...

. The teeth are nearly flat, with a central point.

Species

There are currently 21 recognized species in this genus: * ''

Narcine atzi ''Narcine'' is a genus of electric rays in the family Narcinidae. These species have a rounded pectoral fin disc and two dorsal fins, the first usually smaller than the second and placed behind the pelvic fin bases. The tail is longer than the ...

'' M. R. de Carvalho & J. E. Randall, 2003 (Atz's numbfish) * ''

Narcine baliensis ''Narcine'' is a genus of electric rays in the family Narcinidae. These species have a rounded pectoral fin disc and two dorsal fins, the first usually smaller than the second and placed behind the pelvic fin bases. The tail is longer than the ...

'' M. R. de Carvalho & W. T. White, 2016 Carvalho, M.R.d. & White, W.T. (2016): ''Narcine baliensis'', a new species of electric ray from southeast Asia (Chondrichthyes: Torpediniformes). ''Zootaxa, 4127 (1): 149–160.'' * ''

Narcine bancroftii The lesser electric ray (''Narcine bancroftii''), also known as the Brazilian electric ray, small electric ray, spotted torpedo ray, torpedofish or trembler, is a species of numbfish in the family Narcinidae found on the western coastal fringes ...

'' ( E. Griffith & C. H. Smith, 1834) (Lesser electric ray) * ''

Narcine brasiliensis ''Narcine brasiliensis'', the Brazilian electric ray or lesser numbfish, is a species of electric ray in the family Narcinidae. It inhabits coastal waters of the Southwest Atlantic from Southern Brazil through Uruguay to northern Argentina. ...

'' ( Olfers, 1831) (Brazilian electric ray) * ''

Narcine brevilabiata The shortlip electric ray (''Narcine brevilabiata''), is a species of electric ray in the numbfish family, Narcinidae. It may be synonymous with the blackspotted numbfish, ''Narcine maculata''. The shortlip electric ray is found in shallow con ...

'' Bessednov, 1966 (Short-lip electric ray) * ''

Narcine brunnea ''Narcine brunnea'', the brown numbfish or brown electric ray, is a species of numbfish in the family Narcinidae. It is found in Indo-West Pacific countries such as Pakistan off coast, India, Sri Lanka, to the Gulf of Thailand Thailand ...

'' Annandale, 1909 (Brown numbfish) * ''

Narcine entemedor ''Narcine entemedor'', the giant electric ray or Cortez electric ray, is a species of numbfish, family Narcinidae, native to the eastern Pacific Ocean from the Gulf of California to Panama. It is found in shallow water on sandy bottoms and some ...

D. S. Jordan David Starr Jordan (January 19, 1851 – September 19, 1931) was the founding president of Stanford University, serving from 1891 to 1913. He was an ichthyologist during his research career. Prior to serving as president of Stanford Universi ...

& Starks, 1895 (Giant electric ray) * ''

Narcine insolita ''Narcine'' is a genus of electric rays in the family (biology), family Narcinidae. These species have a rounded pectoral fin disc and two dorsal fins, the first usually smaller than the second and placed behind the pelvic fin bases. The caudal f ...

'' M. R. de Carvalho, Séret & Compagno, 2002 (Madagascar numbfish) * '' Narcine leoparda'' M. R. de Carvalho, 2001 (Leopard electric ray) * '' Narcine lingula'' J. Richardson, 1846 (Chinese numbfish) * '' Narcine maculata'' ( G. Shaw, 1804) (Dark-finned numbfish) * ''

Narcine oculifera ''Narcine'' is a genus of electric rays in the family (biology), family Narcinidae. These species have a rounded pectoral fin disc and two dorsal fins, the first usually smaller than the second and placed behind the pelvic fin bases. The caudal f ...

'' M. R. de Carvalho, Compagno & Mee, 2002 (Big-eye electric ray) * '' Narcine prodorsalis'' Bessednov, 1966 (Tonkin numbfish) * '' Narcine rierai'' ( Lloris & Rucabado, 1991) (Slender electric ray) * '' Narcine tasmaniensis'' J. Richardson, 1841 (Tasmanian numbfish) * '' Narcine timlei'' (

Bloch Bloch is a surname of German origin. Notable people with this surname include: A *Adele Bloch-Bauer (1881–1925), Austrian entrepreneur *Albert Bloch (1882–1961), American painter *Alexandre Bloch (1857–1919), French painter *Alfred Bloch ( ...

& J. G. Schneider, 1801) (Spotted numbfish) * '' Narcine vermiculatus'' Breder, 1928 (Vermiculate electric ray)

References

Ray genera Taxa named by Friedrich Gustav Jakob Henle Taxonomy articles created by Polbot {{batoid-stub