Overview

Comprehensive Description

Biology

Epi- and mesopelagic, with fishing depths to 4000 m (Ref. 58302). Found on the continental slope (Ref. 75154).
  • Parin, N.V. and O.D. Borodulina 1996 Revision of the Astronesthes indicus species group (Astronesthidae), with descriptions of five new species. J. Ichthyol. 36(8):551-565. (Ref. 27676)
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Distribution

Indo-Pacific: Its range seems to represent the equatorial distributional pattern; it expands southwards in the western parts of the Pacific (including the Philippine Sea, Ref. 41299), and Indian oceans; absent in the eastern part. Atlantic Ocean: Present in a small portion near southern Africa.
  • Parin, N.V. and O.D. Borodulina 1996 Revision of the Astronesthes indicus species group (Astronesthidae), with descriptions of five new species. J. Ichthyol. 36(8):551-565. (Ref. 27676)
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Indo-West Pacific, including Hawaiian Islands; southeastern Atlantic (waifs only).
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Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 14 - 17; Analspines: 0; Analsoft rays: 12 - 16; Vertebrae: 43 - 46
  • Parin, N.V. and O.D. Borodulina 1996 Revision of the Astronesthes indicus species group (Astronesthidae), with descriptions of five new species. J. Ichthyol. 36(8):551-565. (Ref. 27676)
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Size

Maximum size: 208 mm SL
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Max. size

20.8 cm SL (male/unsexed; (Ref. 27676))
  • Parin, N.V. and O.D. Borodulina 1996 Revision of the Astronesthes indicus species group (Astronesthidae), with descriptions of five new species. J. Ichthyol. 36(8):551-565. (Ref. 27676)
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Diagnostic Description

Last photophore of VAL series behind origin of anal and last photophore of VAV series. Aggregation of luminous tissue on head, when fully developed fish > 10 cm SL, forming transverse bar across gill cover; longitudinally oriented aggregations of luminous tubercle-like spots on body behind head and above pelvic fins. In immature fish < 6 cm SL, chin barbel fully developed, longer than head, its swollen tip forming elongate thickened rod with two flattened distal lobes (Ref. 27676).
  • Parin, N.V. and O.D. Borodulina 1996 Revision of the Astronesthes indicus species group (Astronesthidae), with descriptions of five new species. J. Ichthyol. 36(8):551-565. (Ref. 27676)
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Type Information

Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 333295
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): T. Clarke
Year Collected: 1970
Locality: Leeward Oahu, Hawaii., Oahu, Hawaii, United States, Hawaiian Islands, Pacific
Depth (m): 100 to 100
Vessel: Blood, Sweat, & Tears
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 333299
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): T. Clarke
Year Collected: 1970
Locality: Leeward Oahu, Hawaii, Oahu, Hawaii, United States, Hawaiian Islands, Pacific
Depth (m): 700 to 800
Vessel: El Pescadero
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 333297
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): T. Clarke
Year Collected: 1970
Locality: Leeward Oahu, Hawaii, Oahu, Hawaii, United States, Hawaiian Islands, Pacific
Depth (m): 700 to 750
Vessel: El Pescadero
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 322349
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): T. Clarke
Year Collected: 1970
Locality: Leeward Oahu, Hawaii., Oahu, Hawaii, United States, Hawaiian Islands, Pacific
Depth (m): 750 to 750
Vessel: El Pescadero
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 333305
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): R. Young
Year Collected: 1972
Locality: Off Leeward Oahu, Hawaiian Islands., Oahu, Hawaii, United States, Hawaiian Islands, Pacific
Depth (m): 1500 to 4000
Vessel: Teritu
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 292329
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): G. Harbison
Year Collected: 1982
Locality: Bismarck Sea., Papua New Guinea, Bismarck Archipelago, Pacific
Depth (m): 2230
Vessel: Basten
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Holotype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 292317
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): G. Harbison
Year Collected: 1981
Locality: Coral Sea., Coral Sea, Pacific
Depth (m): 850
Vessel: Basten
  • Holotype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 292336
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): G. Harbison
Year Collected: 1981
Locality: Coral Sea., Papua New Guinea, Coral Sea, Pacific
Depth (m): 810
Vessel: Basten
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 333294
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1971
Locality: **1600 Mesh Engel Midwater Trawl.Time: 0852-1215 Hoursmin. At Depth: 60'Depth: 1550 Meters, Atlantic
Vessel: Walther Herwig
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 301216
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): R. Gibbs
Year Collected: 1967
Locality: Pacific
Depth (m): 710
Vessel: Eltanin
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 301203
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): R. Gibbs
Year Collected: 1967
Locality: Samoan Islands: South of Upolu., Samoa, Samoa Islands, Pacific
Depth (m): 670
Vessel: Eltanin
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 200895
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1963
Locality: Western Indian Ocean, Indian
Depth (m): 2120
Vessel: Anton Bruun
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 322327
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): T. Clarke
Year Collected: 1969
Locality: Hawaii, United States, Hawaiian Islands, Pacific
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 274430
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): T. Clarke & Hawiian Institute of Marine Biology (HIMB)
Year Collected: 1979
Locality: North Pacific Ocean, Kiribati, Line Islands, Pacific
Depth (m): 290
Vessel: Gyre
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Paratype for Astronesthes bilobatus Parin & Borodulina
Catalog Number: USNM 274412
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): T. Clarke & Hawiian Institute of Marine Biology (HIMB)
Year Collected: 1977
Locality: South Pacific Ocean, Kiribati, Line Islands, Pacific
Depth (m): 300
Vessel: Kana Keoki
  • Paratype: Parin, N. V. & Borodulina, O. D. 1996. Voprosy Ikhtiologii. 36 (5): 591, fig. 6.
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Ecology

Habitat

Environment

bathypelagic; marine; depth range 50 - 2230 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 27 specimens in 1 taxon.
Water temperature and chemistry ranges based on 14 samples.

Environmental ranges
  Depth range (m): 26.5 - 2230
  Temperature range (°C): 2.265 - 18.292
  Nitrate (umol/L): 1.628 - 42.520
  Salinity (PPS): 34.354 - 35.564
  Oxygen (ml/l): 0.555 - 5.386
  Phosphate (umol/l): 0.285 - 3.202
  Silicate (umol/l): 1.384 - 133.263

Graphical representation

Depth range (m): 26.5 - 2230

Temperature range (°C): 2.265 - 18.292

Nitrate (umol/L): 1.628 - 42.520

Salinity (PPS): 34.354 - 35.564

Oxygen (ml/l): 0.555 - 5.386

Phosphate (umol/l): 0.285 - 3.202

Silicate (umol/l): 1.384 - 133.263
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 0 - 850m.
Recorded at 850 meters.

Habitat: pelagic.
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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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