Hardenberg's Burrfish
Cyclichthys hardenbergi
- Usual depth4–51 m
- Water temperature26–29 °C
- Best monthsJuly and November
- How commonRare
About this species
Cyclichthys hardenbergi, commonly known as Hardenburg's burrfish, is a species of porcupinefish in the family Diodontidae. It is native to the tropical western Pacific Ocean, where it is known from southern New Guinea and northern Australia east of Cape York. The species is typically seen at depths of less than 100 m (328 ft) over soft substrates. It is believed to be a solitary species that feeds on hard-shelled invertebrates. The species reaches 25 cm in standard length. Although sometimes caught by trawling, it is not a target for commercial fisheries.
Text from the Wikipedia article “Cyclichthys hardenbergi”, 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: 0 records
- February: 1 records
- March: 1 records
- April: 0 records
- May: 3 records
- June: 3 records
- July: 7 records
- August: 3 records
- September: 1 records
- October: 4 records
- November: 8 records
- December: 1 records
Depth and water temperature
Depth
Mostly recorded at 4–51 m · Deepest record: 52 m
Water temperature
Recorded in surface water of 26–29 °C
Names and classification
- English
- Hardenberg's Burrfish, Plain Porcupine-fish, Plain Porcupinefish
Other scientific names: Chilomycterus hardenbergi
Similar species
Birdbeak burrfishCyclichthys orbicularis
BallonfishCyclichthys spilostylus
BalloonfishDiodon holocanthus
PorcupinefishDiodon hystrix
GlobefishDiodon nicthemerus
Australian BurrfishAllomycterus pilatus
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).
- 48 open-data records from 1963 to 2015.
- Species data updated November 1, 2026.
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