Hoplostethus metallicus
- Usual depth362–549 m
- Water temperature28–29 °C
- Best monthsApril
- How commonRare
About this species
The metallic roughy is a slimehead of the order Trachichthyiformes. It is native to the Western Central Pacific along the eastern seaboard of Negros Island in the Philippines and other locations in the Sulu Sea. It has a deep-water range of 55–550 m (180–1,800 ft). The species is unique within its genus for having a tubular light organ on either side of the belly. It is known from only 25 collected specimens, but members of this genus are known to frequently be "locally abundant," occurring in dense schools over seamounts.
Text from the Wikipedia article “Metallic roughy”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 0 records
- February: 0 records
- March: 0 records
- April: 3 records
- May: 0 records
- June: 0 records
- July: 1 records
- August: 0 records
- September: 0 records
- October: 0 records
- November: 0 records
- December: 0 records
Depth and water temperature
Depth
Mostly recorded at 362–549 m · Deepest record: 549 m
Water temperature
Recorded in surface water of 28–29 °C
Names and classification
Similar species
- Western Pacific Roughy
Hoplostethus japonicus
- Blackfin Roughy
Hoplostethus melanopterus
- Blackfin Roughy
Hoplostethus melanopus
- Big roughy
Gephyroberyx darwinii
- Philippine Luminous Roughy
Aulotrachichthys latus
- Big Roughy
Gephyroberyx japonicus
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 8 open-data records from 1908 to 1908.
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