Overview

Comprehensive Description

Biology

An oceanic and mesopelagic species usually found deeper than 500 m during the day (Ref. 2802). Feeds on midwater fishes and crustaceans (Ref. 2802). Also Ref. 58302.
  • Gibbs, R.H. Jr. 1990 Astronesthidae. p. 300-307. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris and UNESCO, Paris. Vol. 1. (Ref. 4465)
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Data on Catalog of Fishes

View data on Catalog of Fishes here.

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Main Reference

Gibbs RH, Jr. 1984. Astronesthidae. In: Whitehead PJP, Bauchot M-L, Hureau J-C, Nielsen J, Tortonese E, editors. Fishes of the North-eastern Atlantic and the Mediterranean. Paris: UNESCO. p 325–335.

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Description

body not especially elongate; head with anterior end of snout appearing upturned; anterior gill bar with 39 or more long, closely spaced spines; teeth in jaws all small, closely spaced. Dorsal fin origin a short distance behind pelvic insertion, with 8–12 rays; anal fin long, with 22 or more rays. Color of head and body iridescent black.

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Distribution

41.86°N to Gulf of Mexico including Western Caribbean, and from Brazil to Argentina
  • North-West Atlantic Ocean species (NWARMS)
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Eastern Atlantic: southern Portugal to Mauritania, and from Namibia to South Africa. Western Atlantic: USA to Gulf of Mexico including western Caribbean, and from Brazil to Argentina. Indian Ocean: mostly 25°S, also taken in Arabian Sea. Pacific: mostly south of 25°S, also near Hawaii, off western USA.
  • Gibbs, R.H. Jr. 1990 Astronesthidae. p. 300-307. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris and UNESCO, Paris. Vol. 1. (Ref. 4465)
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Across the Atlantic between about 23° and 35° N, uncommon in the tropical Atlantic, but fairly common again between 20° and 38° S; also Indian and Pacific Oceans.

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Circumglobal, primarily in subtropical and temperate seas, including Hawaiian Ridge.
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Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 8 - 12; Analspines: 0; Analsoft rays: 22 - 28
  • Gibbs, R.H. Jr. 1986 Astronesthidae. p. 231-234. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3982)
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Size

Maximum size: 170 mm SL
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Max. size

17.0 cm SL (male/unsexed; (Ref. 4465))
  • Gibbs, R.H. Jr. 1990 Astronesthidae. p. 300-307. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris and UNESCO, Paris. Vol. 1. (Ref. 4465)
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to about 170 mm SL.

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Diagnostic Description

Body black in color, often iridescent (Ref. 3982). Teeth in jaws uniserial, very short, spine-like, about equally spaced (Ref. 559). Snout shorter than eye (Ref 559). Anal fin with many rays; its base long, more than twice that of dorsal (Ref. 559). Gill rakers much attenuated, numerous, close together (Ref. 559).
  • Gibbs, R.H. Jr. 1986 Astronesthidae. p. 231-234. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3982)
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Type Information

Holotype for Neonesthes capensis
Catalog Number: USNM 170925
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1930
Locality: Bermuda, 9 mi. S. of Nonsuch Island, 800 Fms., Bermuda, Atlantic
  • Holotype:
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Ecology

Habitat

nektonic
  • North-West Atlantic Ocean species (NWARMS)
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occasionally found in Canadian Atlantic waters; pelagic species
  • North-West Atlantic Ocean species (NWARMS)
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Environment

bathypelagic; marine; depth range 70 - 1650 m (Ref. 58302)
  • Mundy, B.C. 2005 Checklist of the fishes of the Hawaiian Archipelago. Bishop Museum Bulletins in Zoology. Bishop Mus. Bull. Zool. (6):1-704. (Ref. 58302)
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Depth range based on 60 specimens in 1 taxon.
Water temperature and chemistry ranges based on 48 samples.

Environmental ranges
  Depth range (m): 185 - 1605
  Temperature range (°C): 3.098 - 13.169
  Nitrate (umol/L): 14.551 - 43.557
  Salinity (PPS): 33.964 - 35.711
  Oxygen (ml/l): 0.415 - 5.789
  Phosphate (umol/l): 0.945 - 3.228
  Silicate (umol/l): 6.286 - 100.811

Graphical representation

Depth range (m): 185 - 1605

Temperature range (°C): 3.098 - 13.169

Nitrate (umol/L): 14.551 - 43.557

Salinity (PPS): 33.964 - 35.711

Oxygen (ml/l): 0.415 - 5.789

Phosphate (umol/l): 0.945 - 3.228

Silicate (umol/l): 6.286 - 100.811
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Trophic Strategy

An oceanic and mesopelagic species usually found deeper than 500 m during the day. Feeds on midwater fishes and crustaceans.
  • Gibbs, R.H. Jr. 1984 Astronesthidae. p. 325-335. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and the Mediterranean. UNESCO, Paris. Vol. 1. (Ref. 2802)
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Life History and Behavior

Behavior

Diet

Feeds on salps
  • North-West Atlantic Ocean species (NWARMS)
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Neonesthes capensis

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Neonesthes capensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 5
Species With Barcodes: 1
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Wikipedia

Neonesthes capensis

Neonesthes capensis, the Cape snaggletooth, is a lightfish of the family Stomiidae, found in all tropical and subtropical oceans except the north Pacific, at depths of between 70 and 1,500 meters. Its length is between 10 and 17 centimeters.

The anal fin is narrow but long, reaching almost to the caudal fin.

References

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