Tiara Top Shell

About this species

Coelotrochus tiaratus, whose common names include tiara top shell, brown top shell, mititi, and mitimiti is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

Text from the Wikipedia article “Coelotrochus tiaratus”, 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: 17 records
February: 11 records
March: 11 records
April: 13 records
May: 13 records
June: 10 records
July: 23 records
August: 6 records
September: 20 records
October: 21 records
November: 9 records
December: 18 records

Depth and water temperature

Depth

Mostly recorded at 1–45 m · Deepest record: 412 m

0–10 m: 8 records
10–20 m: 8 records
20–30 m: 2 records
30–40 m: 0 records
40–50 m: 2 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 12–18 °C

10–12 °C: 5 records
12–14 °C: 2 records
14–16 °C: 5 records
16–18 °C: 27 records

Photos

(c) Javier, some rights reserved (CC BY), uploaded by Javier · CC BY · iNaturalist
(c) Lisa Bennett, some rights reserved (CC BY), uploaded by Lisa Bennett · CC BY · iNaturalist
(c) wild_wind, some rights reserved (CC BY), uploaded by wild_wind · CC BY · iNaturalist
(c) Lisa Bennett, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Lisa Bennett, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Julia Palmer, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
(c) Saryu Mae 前朝琉, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Tiara Top Shell, Tiara Top Snail

Other scientific names: Anthora conica, Chlorostoma (Neozelandia) huttoni, Chlorostoma huttoni, Polydonta elegans, Trochus (Coelotrochus) tiaratus, Trochus delicatulus, Trochus tiaratus

Similar species

Coelotrochus chathamensis
Green Top Shell
Coelotrochus viridis
Ribbon Monodonta
Austrocochlea constricta
Zebra Snail
Austrocochlea porcata
Banded Kelp Shell
Bankivia fasciata
Cantharidella picturata

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).
334 open-data records from 1904 to 2013.
Species data updated November 1, 2026.