Cryptic Cardinalfish
Apogon erythrinus
- Usual depth1–15 m
- Water temperature22–30 °C
- Best monthsJuly, August, and October
- How commonOccasional
Photo credit: (c) Robin White, some rights reserved (CC BY) · CC BY · iNaturalist
About this species
Apogon erythrinus, also called Hawaiian ruby cardinalfish, is a marine fish species endemic to Hawaii. It belongs to the family Apogonidae and the subfamily Apogoninae.
Text from the Wikipedia article “Apogon erythrinus”, 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: 10 records
- February: 3 records
- March: 4 records
- April: 34 records
- May: 43 records
- June: 26 records
- July: 53 records
- August: 48 records
- September: 39 records
- October: 45 records
- November: 21 records
- December: 9 records
Depth and water temperature
Depth
Mostly recorded at 1–15 m · Deepest record: 46 m
Water temperature
Recorded in surface water of 22–30 °C
Photos
(c) Robin White, some rights reserved (CC BY) · CC BY · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist 
(c) Ken-ichi Ueda, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Cryptic Cardinalfish, Hawaiian Ruby Cardinalfish, Ruby Cardinalfish
Names in 1 more languages
- Simplified Chinese
- 大目側仔, 大面側仔, 粉紅天竺鯛
Similar species
Obliquebanded cardinalfishApogon semiornatus
- Ruby cardinalfish
Apogon coccineus
- Little Red Cardinalfish
Apogon crassiceps
- Flame Cardinalfish
Apogon doryssa
- Little Tailband Cardinalfish
Apogon caudicinctus
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).
- 354 open-data records from 1944 to 2010.
- Species data updated October 26, 2026.
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