Lake Merritt aeolis
Cuthona perca
- Water temperature13–27 °C
- Best monthsOctober
- How commonRare
Photo credit: (c) Cricket Raspet, some rights reserved (CC BY) · CC BY · iNaturalist
About this species
Trinchesia perca, common name Lake Merritt cuthona, is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusk in the family Trinchesiidae. Its placement somewhat controversed, some institutions place it in genus Cuthona under family Cuthonidae.
Text from the Wikipedia article “Trinchesia perca”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 0 records
- February: 1 records
- March: 2 records
- April: 0 records
- May: 0 records
- June: 1 records
- July: 3 records
- August: 12 records
- September: 12 records
- October: 54 records
- November: 2 records
- December: 5 records
Depth and water temperature
Water temperature
Recorded in surface water of 13–27 °C
Photos
(c) Cricket Raspet, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Ken-ichi Ueda, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Ken-ichi Ueda, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Lake Merritt aeolis, Lost Cuthona
Names in 1 more languages
- Japanese
- コウワンミノウミウシ
Other scientific names: Catriona perca, Trinchesia perca
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).
- 18 open-data records from 1972 to 2014.
- Species data updated November 1, 2026.
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