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Queen Scallop

Equichlamys bifrons

  • Molluscs
  • IUCN: Not evaluated
  • Usual depth0 m
  • Water temperature14–19 °C
  • Best monthsSeptember, November, and December
  • How commonOccasional
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Photo credit: (c) ttsquid, some rights reserved (CC BY) · CC BY · iNaturalist

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

  • January: 184 records
  • February: 83 records
  • March: 85 records
  • April: 79 records
  • May: 89 records
  • June: 75 records
  • July: 99 records
  • August: 162 records
  • September: 217 records
  • October: 190 records
  • November: 191 records
  • December: 218 records

Depth and water temperature

Depth

Mostly recorded at 0 m · Deepest record: 10 m

  • 0–10 m: 124 records
  • 10–20 m: 1 records

Water temperature

Recorded in surface water of 14–19 °C

  • 12–14 °C: 49 records
  • 14–16 °C: 58 records
  • 16–18 °C: 32 records
  • 18–20 °C: 1 records

Names and classification

English
Queen Scallop

Other scientific names: Pecten bifrons, Pecten consobrinus, Pecten palmipes, Pecten subbifrons

Similar species

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).
  • 437 open-data records from 1880 to 2014.
  • Species data updated November 2, 2026.

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