Deltocyathus rotulus

Corals and anemones
IUCN: Not evaluated

Usual depth476–1,538 m
Water temperature21–29 °C
Best monthsMay, September, and October
How commonRare

All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 0 records
February: 0 records
March: 10 records
April: 10 records
May: 35 records
June: 11 records
July: 2 records
August: 17 records
September: 27 records
October: 32 records
November: 19 records
December: 11 records

Depth and water temperature

Depth

Mostly recorded at 476–1,538 m · Deepest record: 2,340 m

210–220 m: 6 records
220–230 m: 5 records
230–240 m: 0 records
240–250 m: 0 records
250–260 m: 4 records
260–270 m: 0 records
270–280 m: 0 records
280–290 m: 0 records
290–300 m: 6 records
300–310 m: 0 records
310–320 m: 0 records
320+ m: 293 records

Water temperature

Recorded in surface water of 21–29 °C

20–22 °C: 5 records
22–24 °C: 24 records
24–26 °C: 23 records
26–28 °C: 42 records
28–30 °C: 240 records

Names and classification

Names in 1 more languages

Simplified Chinese: 圓角杯珊瑚

Other scientific names: Deltocyathus fragilis, Trochocyathus (Trochocyathus) rotulus, Trochocyathus rotulus

Similar species

Conical star coral
Deltocyathus italicus
Deltocyathus andamanicus
Deltocyathus philippinensis
Deltocyathus suluensis

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).
334 open-data records from 1906 to 2011.
Species data updated October 26, 2026.

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