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Thyca crystallina

  • Molluscs
  • IUCN: Not evaluated
  • Usual depth2–10 m
  • Water temperature24–30 °C
  • Best monthsApril, May, and July
  • How commonOccasional
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About this species

Thyca crystallina is a species of sea snail, a marine gastropod mollusc in the family Eulimidae. It is one of nine species within the genus Thyca, all of which are parasitic on starfish in the Indo-Pacific Ocean. This species was first described in 1846 by the American conchologist Augustus Addison Gould as Pileopsis crystallina but was later transferred to Thyca.

Text from the Wikipedia article “Thyca crystallina”, 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: 13 records
  • February: 0 records
  • March: 18 records
  • April: 73 records
  • May: 78 records
  • June: 4 records
  • July: 59 records
  • August: 15 records
  • September: 51 records
  • October: 0 records
  • November: 6 records
  • December: 11 records

Depth and water temperature

Depth

Mostly recorded at 2–10 m · Deepest record: 24.4 m

  • 0–10 m: 3 records
  • 10–20 m: 12 records
  • 20–30 m: 1 records

Water temperature

Recorded in surface water of 24–30 °C

  • 24–26 °C: 17 records
  • 26–28 °C: 41 records
  • 28–30 °C: 615 records

Names and classification

Names in 1 more languages
Japanese
ヒトデナカセ

Other scientific names: Pileopsis crystallina, Thyca (Bessomia) crystallina, Thyca pellucida

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.
  • Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
  • Conservation status as published by GBIF (IUCN Red List).
  • 757 open-data records from 1846 to 2014.

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