Articles on this page are available in 1 other language: Spanish (1) (learn more)

Overview

Comprehensive Description

Biology

Mesopelagic species (Ref. 7300).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Description

Astronesthes boulengeri is a relatively elongate fish with a body depth approximately 14–19% SL. Its head is moderately large, 20–25% SL. The jaws are large, as well. Both the upper and lower jaws are laden with long, fang-like teeth. As with all members of the genus, the maxillary teeth are numerous and comblike. The eye is relatively large, about 25% the length fo the head; the eye is larger in males than in females.

The chin barbel relatively short in this species, approximately 25–150% SL, and increasing with specimen size. The terminal bulb of the barbel is an elongated ovular mass. The ventrolateral photophores are evenly and closely spaced with the IV photophores forming a deep curve under pectoral fin. The middle 1 or 2 AC photophores are raised above the others in series. The posterior trunk and peduncle is covered with scattered patches of luminescent tissue, with the posterior luminescent patches often obscuring last few AC photophores. The postorbital photophore is minute. The skin smooth, black, and without scales. Both a dorsal and ventral adipose fin is present.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Data on Catalog of Fishes

Data for Astronesthes boulengeri in the Catalog of Fishes.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Type locality

Off Cape Point light house, bearing south 83° distant 35.5 miles, South Africa, depth 360 fathoms.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Type specimen(s)

Holotype (unique): SAM 12701. Second specimen [SAM 12702] included with some question and not regarded as a type.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Main Reference

Parin N, Borodulina O, Hulley P. 1999. A Review of the Astronesthes boulengeri Species Group (Astronesthidae, Stomiiformes) with Description of Two New Species. Journal of Ichthyology 39(8):557–570.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Biology

A mesopelagic dragonfish that inhabits temperate waters of the Atlantic, Indian, and Pacific oceans south of approximately 30˚S. A. boulengeri is one of the largest species of the genus Astronesthes attaining a length of 210 mm or more.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Distribution

Circumpolar between 30° and 40°S.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Temperate waters of the Atlantic, Indian, and Pacific oceans south of approximately 30˚S.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Circumglobal, mostly Southern Hemisphere.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 13 - 17; Analspines: 0; Analsoft rays: 12 - 18
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Size

Maximum size: 210 mm TL
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Max. size

21.0 cm TL (male/unsexed; (Ref. 34190)); 21.2 cm SL (female)
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

210 mm SL

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Diagnostic Description

Black in color with pale luminous patches, which develop with growth, on dorsal and ventral caudal peduncle and other parts of body (Ref. 3982).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Astronesthes boulengeri is most readily distinguished from other members of the group by the size and position of the caudal luminescent patches and the long dorsal-fin base.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Ecology

Habitat

Environment

bathypelagic; marine; depth range 12 - 4000 m (Ref. 34190)
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Depth range based on 39 specimens in 1 taxon.
Water temperature and chemistry ranges based on 24 samples.

Environmental ranges
  Depth range (m): 0 - 4914
  Temperature range (°C): 2.584 - 15.287
  Nitrate (umol/L): 6.721 - 39.080
  Salinity (PPS): 34.130 - 35.319
  Oxygen (ml/l): 2.012 - 6.857
  Phosphate (umol/l): 0.671 - 2.793
  Silicate (umol/l): 2.550 - 85.556

Graphical representation

Depth range (m): 0 - 4914

Temperature range (°C): 2.584 - 15.287

Nitrate (umol/L): 6.721 - 39.080

Salinity (PPS): 34.130 - 35.319

Oxygen (ml/l): 2.012 - 6.857

Phosphate (umol/l): 0.671 - 2.793

Silicate (umol/l): 2.550 - 85.556
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Mesopelagic during the day; epipelagic at night.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Dispersal

Pelagic eggs and larvae.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Life History and Behavior

Growth

Attains a standard length of at least 210 mm, making it one of the largest members of the genus.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Kenaley, Christopher

Source: Deep-sea Fishes of the World

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Astronesthes boulengeri

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 7
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Conservation

Threats

Not Evaluated
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!