Common Small Purple

About this species

Agnewia tritoniformis is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.

Text from the Wikipedia article “Agnewia tritoniformis”, 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: 96 records
February: 103 records
March: 102 records
April: 82 records
May: 84 records
June: 71 records
July: 59 records
August: 42 records
September: 80 records
October: 76 records
November: 54 records
December: 52 records

Depth and water temperature

Depth

Mostly recorded at 0–13 m · Deepest record: 45 m

0–10 m: 74 records
10–20 m: 4 records
20–30 m: 3 records
30–40 m: 2 records
40–50 m: 1 records

Water temperature

Recorded in surface water of 14–25 °C

12–14 °C: 13 records
14–16 °C: 165 records
16–18 °C: 68 records
18–20 °C: 72 records
20–22 °C: 155 records
22–24 °C: 42 records
24–26 °C: 1 records

Photos

(c) Saryu Mae 前朝琉, some rights reserved (CC BY), uploaded by Saryu Mae 前朝琉 · CC BY · iNaturalist
(c) Thomas Mesaglio, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Tim, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Thomas Mesaglio, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Tim, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Oscar Dove, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Tim Johnson, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Common Small Purple

Other scientific names: Adamsia typica, Agnewia nautica, Purpura tritoniformis

Similar species

Arakawania granulata
Arakawania marginalba
Arakawania musiva
Adusta murex
Chicoreus brunneus
Branched murex
Chicoreus ramosus
Purple coral snail
Coralliophila violacea

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).
807 open-data records from 1868 to 2023.
Species data updated October 27, 2026.