Megrim
Arnoglossus scapha
- Usual depth41–351 m
- Water temperature8–18 °C
- Best monthsMarch and July
- How commonCommon
About this species
The witch, Arnoglossus scapha, is a lefteye flounder of the family Bothidae, found around China and New Zealand, in waters less than 400 m in depth. Their length is from 20 to 40 cm.
Text from the Wikipedia article “Witch (lefteye flounder)”, 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: 0 records
- February: 4 records
- March: 22 records
- April: 11 records
- May: 16 records
- June: 11 records
- July: 29 records
- August: 11 records
- September: 3 records
- October: 1 records
- November: 2 records
- December: 5 records
Depth and water temperature
Depth
Mostly recorded at 41–351 m · Deepest record: 908 m
Water temperature
Recorded in surface water of 8–18 °C
Names and classification
- English
- Megrim, Witch
Other scientific names: Caulopsetta scapha, Pleuronectes scapha
Similar species
- Imperial scaldfish
Arnoglossus imperialis
- Waite’s Flounder
Arnoglossus waitei
- Brown Flounder
Arnoglossus aspilos
- Bass Strait Flounder
Arnoglossus bassensis
- Brown Lefteye Flounder
Arnoglossus brunneus
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).
- 5,726 open-data records from 1900 to 2018.
- Species data updated October 27, 2026.
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