Big roughy
Gephyroberyx darwinii
- Usual depth33–485 m
- Water temperature15–29 °C
- Best monthsFebruary, November, and December
- How commonOccasional
About this species
Gephyroberyx darwinii, the big roughy or Darwin's slimehead, is a species of fish in the slimehead family found widely in the Atlantic and Indo-Pacific oceans. This deep-sea species reaches a length of 60 cm (2.0 ft) and is mainly found at depths of 200 to 500 m (660–1,640 ft), but has been recorded between 9 and 1,210 m (30–3,970 ft). Based on broadly overlapping morphological features it sometimes includes G. japonicus as a synonym.
Text from the Wikipedia article “Gephyroberyx darwinii”, 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: 3 records
- February: 15 records
- March: 6 records
- April: 7 records
- May: 9 records
- June: 5 records
- July: 6 records
- August: 9 records
- September: 7 records
- October: 3 records
- November: 16 records
- December: 14 records
Depth and water temperature
Depth
Mostly recorded at 33–485 m · Deepest record: 635 m
Water temperature
Recorded in surface water of 15–29 °C
Names and classification
- English
- Big roughy, Big Roughie, big roughy, Darwin's red-fish, Darwin's redfish, Darwin's roughy, Darwin's slimehead, Finescale roughy
Names in 3 more languages
- Spanish
- carajuelo de fondo, Carajuelo del fondo, Reloj de Darwin
- French
- Hoplostète de Darwin
- Japanese
- ハシキンメ
Other scientific names: Gephyroberys darwinii, Gephyroberyx darwini, Gephyroberyx orbicularis, Gephyroberyx philippinus, Gephyroberyx robustus, Trachichthys darwini, Trachichthys darwinii
Similar species
- Big Roughy
Gephyroberyx japonicus
- Philippine Luminous Roughy
Aulotrachichthys latus
- Western Pacific Roughy
Hoplostethus japonicus
- Blackfin Roughy
Hoplostethus melanopterus
- Blackfin Roughy
Hoplostethus melanopus
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).
- 347 open-data records from 1908 to 2022.
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