Iridescent Scallop

Pedum spondyloideum

Molluscs
IUCN: Not evaluated

Usual depth13–20 m
Water temperature23–30 °C
Best monthsSeptember, October, and November
How commonOccasional

Photo credit: no rights reserved · CC0 1.0 · iNaturalist

About this species

Pedum is a monotypic genus of bivalves belonging to the family Pectinidae, the scallops. The only species is Pedum spondyloideum and it is the only genus in the tribe Pedini. Sometimes referred to as the iridescent scallop, this species is found throughout the Indo-Pacific.

Text from the Wikipedia article “Pedum spondyloideum”, 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: 62 records
February: 54 records
March: 69 records
April: 62 records
May: 71 records
June: 63 records
July: 85 records
August: 92 records
September: 138 records
October: 98 records
November: 105 records
December: 81 records

Depth and water temperature

Depth

Mostly recorded at 13–20 m · Deepest record: 810 m

0–10 m: 5 records
10–20 m: 29 records
20–30 m: 26 records
30–40 m: 0 records
40–50 m: 1 records
50–60 m: 0 records
60–70 m: 0 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 0 records
110+ m: 1 records

Water temperature

Recorded in surface water of 23–30 °C

22–24 °C: 2 records
24–26 °C: 13 records
26–28 °C: 20 records
28–30 °C: 98 records

Photos

no rights reserved · CC0 1.0 · iNaturalist
(c) portioid, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Jan Ebr & Ivana Ebrová, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist
(c) nbasargin, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Paul Asman and Jill Lenoble, some rights reserved (CC BY) · CC BY · iNaturalist
(c) cello caruso-turiello, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Iridescent Scallop

Names in 5 more languages

German: Korallen-Kammuschel
French: Huître corallicole
Japanese: ウミギクモドキ
Thai: หอยแมลงภู่ปะการัง
Simplified Chinese: 海菊海扇蛤

Other scientific names: Ostrea pedum, Ostrea spondyloidea, Pedum pedum

Similar species

Asian moon scallop
Amusium pleuronectes
Mantle scallop
Gloripallium pallium
Laevichlamys cuneata
Noble scallop
Mimachlamys sanguinea
Carmine Banded Scallop
Annachlamys flabellata
Cryptopecten nux

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).
416 open-data records from 1791 to 2009.
Species data updated October 30, 2026.

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