DiscoverSpeciesSharks and rays
Mozambique Numbfish
Narcine rierai
- Usual depth177–268 m
- Water temperature26–27 °C
- Best monthsAugust and October
- How commonRare
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: 0 records
- May: 0 records
- June: 1 records
- July: 0 records
- August: 2 records
- September: 0 records
- October: 3 records
- November: 0 records
- December: 0 records
Depth and water temperature
Depth
Mostly recorded at 177–268 m · Deepest record: 267.5 m
Water temperature
Recorded in surface water of 26–27 °C
Names and classification
- English
- Mozambique Numbfish, Slender Electric Ray, Slender Numbfish
Other scientific names: Heteronarce rierai
Similar species
Brown NumbfishNarcine timlei
- Brown Numbfish
Narcine brunnea
- Bigeye Electric Ray
Narcine oculifera
- Electric Ray
Narcinops tasmaniensis
- Dark Blindray
Benthobatis moresbyi
- Last's Numbfish
Narcinops lasti
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).
- 6 open-data records from 1994 to 2007.
- Species data updated November 4, 2026.
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