Bigeye Cusk
Alionematichthys riukiuensis
- Usual depth1–11 m
- Water temperature24–29 °C
- Best monthsMay and October
- How commonRare
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 2 records
- February: 1 records
- March: 0 records
- April: 0 records
- May: 6 records
- June: 0 records
- July: 1 records
- August: 3 records
- September: 2 records
- October: 4 records
- November: 3 records
- December: 3 records
Depth and water temperature
Depth
Mostly recorded at 1–11 m · Deepest record: 11 m
Water temperature
Recorded in surface water of 24–29 °C
Names and classification
- English
- Bigeye Cusk, Robust Cusk, Ryukyu Viviparous Brotula
Names in 2 more languages
- Japanese
- Ryukyu-itachiuo, Ryukyuitachiuo, リュウキュウイタチウオ
- Simplified Chinese
- 深海鼬魚, 琉球海鼬魚, 琉球雙線鼬鳚
Other scientific names: Dinematichthys megasoma, Dinematichthys riukiuensis
Similar species
- Bighead Viviparous Brotula
Alionematichthys crassiceps
- Whiskered Viviparous Brotula
Alionematichthys piger
- Winterbottom's Viviparous Brotula
Alionematichthys winterbottomi
- Yellow pigmy brotula
Dinematichthys iluocoeteoides
- Taiwan coral-brotula
Brotulinella taiwanensis
- Dusky Brotulid
Diancistrus fuscus
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.
- Conservation status as published by GBIF (IUCN Red List).
- 141 open-data records from 1975 to 2009.
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