DiscoverSpeciesCorals and anemones
Joker coral
Euphyllia glabrescens
- Usual depth2–18 m
- Water temperature22–30 °C
- Best monthsApril and May
- How commonOccasional
About this species
Euphyllia glabrescens is a species of large-polyped stony coral belonging to the family Euphylliidae. Its common name is the torch coral due to its long sweeper tentacles tipped with potent cnidocytes. It is a commonly kept species in the marine aquarium hobby, particularly specimens from Indonesia and Fiji, who fulfilled annual export quotas of 28,000 and 6,000 pieces, respectively, in 2005.
Text from the Wikipedia article “Euphyllia glabrescens”, 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: 1 records
- February: 8 records
- March: 13 records
- April: 25 records
- May: 30 records
- June: 17 records
- July: 6 records
- August: 17 records
- September: 10 records
- October: 3 records
- November: 0 records
- December: 7 records
Depth and water temperature
Depth
Mostly recorded at 2–18 m · Deepest record: 50 m
Water temperature
Recorded in surface water of 22–30 °C
Names and classification
- English
- Joker coral, joker coral, Torch Coral
Names in 1 more languages
- Japanese
- ハナサンゴ
Other scientific names: Caryophyllia angulosa, Caryophyllia glabrescens, Catalaphyllia okinawaensis, Euphyllia (Euphyllia) glabrescens, Euphyllia costulata, Euphyllia gaimardi, Euphyllia laxa, Euphyllia rugosa, Euphyllia striata, Euphyllia turgida, Leptosmilia costulata, Leptosmilia gaimardi, Leptosmilia glabrescens, Leptosmilia rugosa, Leptosmilia striata, Lobophyllia glabrescens
Similar species
- Crystal coral
Galaxea fascicularis
- Octopus coral
Galaxea astreata
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).
- 429 open-data records from 1821 to 2023.
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