Diaphus diadematus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Myctophiformes Myctophidae

Scientific Name: Diaphus diadematus Tåning, 1932
Common Name(s):
English Crown Lanternfish

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2009-02-04
Assessor(s): Paxton, J.R.
Reviewer(s): Collen, B., Richman, N., Beresford, A., Chenery, A. & Ram, M.
Contributor(s): De Silva, R., Milligan, H., Lutz, M., Batchelor, A., Jopling, B., Kemp, K., Lewis, S., Lintott, P., Sears, J., Wilson, P. & Smith, J. and Livingston, F.
Diaphus diadematus has been assessed as Least Concern. This broadly distributed species is not known to face any major threats. It may be taken as the by-catch of other fisheries, however due to its small size this is unlikley to be a major threat. Further research on the population numbers and potential threats is needed to ensure a significant threat is not missed.

Geographic Range [top]

Range Description:The Crown Lanternfish (Diaphus diadematus) is found between 18°S and 23°S in the eastern Atlantic Ocean, but west of the thermal front which occurs from Benguela Water, Angola, to the south Atlantic central water. This species has a disjunct distribution in the the Indian Ocean; it is known from Sumatra, the Mozambique Channel, and in the Agulhas Current. In the Western Pacific, this species is found in southeast Asian seas and around northern Australia to 20°N.
Countries occurrence:
Australia; Cambodia; Indonesia; Madagascar; Malaysia; Mozambique; Namibia; Papua New Guinea; Philippines; South Africa; Thailand; Viet Nam
FAO Marine Fishing Areas:
Atlantic – eastern central; Atlantic – southeast; Indian Ocean – western; Indian Ocean – eastern; Pacific – western central
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no known population information for Crown Lanternfish, however species from the Myctophidae family are reported to be very common oceanic fishes (FAO 1999).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:Unknown

Habitat and Ecology [top]

Habitat and Ecology:The Crown Lanternfish is a bathypelagic, oceandromous species that migrates to the upper 100 m of the water column at night.
Movement patterns:Full Migrant

Threats [top]

Major Threat(s): There is no known commercial fishery for this species. Due to the depths at which this species can be found, it may be taken as a by-catch species of prawn fisheries operating within its range; however due to its small size it will pass through the nets of many trawlers.

Conservation Actions [top]

Conservation Actions: There are no known species-specific conservation measures in place for the Crown Lanternfish.

Errata [top]

Errata reason: This errata assessment has been created because the map was accidentally left out of the version published previously.

Citation: Paxton, J.R. 2010. Diaphus diadematus (errata version published in 2017). The IUCN Red List of Threatened Species 2010: e.T154616A115214076. . Downloaded on 15 October 2018.
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