Froghead Eel
Coloconger raniceps
- Usual depth305–725 m
- Water temperature26–29 °C
- Best monthsApril
- How commonRare
About this species
The froghead eel is an eel in the family Colocongridae. It was described by Alfred William Alcock in 1889. It is a marine, deep-water dwelling eel which is known from the Indo-west Pacific, including East Africa, Madagascar, and southern Japan. It dwells at a depth range of 300–1134 metres. Males can reach a maximum total length of 50 centimetres.
Text from the Wikipedia article “Froghead eel”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
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Best months
Worldwide (open data)
- January: 2 records
- February: 3 records
- March: 3 records
- April: 16 records
- May: 1 records
- June: 1 records
- July: 1 records
- August: 4 records
- September: 3 records
- October: 0 records
- November: 6 records
- December: 6 records
Depth and water temperature
Depth
Mostly recorded at 305–725 m · Deepest record: 996.5 m
Water temperature
Recorded in surface water of 26–29 °C
Names and classification
- English
- Froghead Eel
Names in 3 more languages
- Japanese
- Fusaanago, フサアナゴ
- Thai
- ปลาไหลหัวกบ
- Simplified Chinese
- 蛙頭倭糯鰻, 蛙頭短尾康吉鰻, 蛙頭短糯鰻
Similar species
- Shorttail conger
Coloconger scholesi
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).
- 51 open-data records from 1889 to 2025.
- Species data updated November 1, 2026.
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