Longnose filefish
Oxymonacanthus longirostris
- Usual depth2–15 m
- Water temperature23–29 °C
- Best monthsJuly, September, and November
- How commonOccasional
Photo credit: (c) Ian Dugdale, some rights reserved (CC BY) · CC BY · iNaturalist
About this species
Oxymonacanthus longirostris, more commonly known as the orange spotted filefish, is a small marine reef fish in the family Monacanthidae. Other common names they are known by include the harlequin filefish and the longnose filefish.
Text from the Wikipedia article “Orange spotted filefish”, 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: 102 records
- February: 138 records
- March: 137 records
- April: 148 records
- May: 149 records
- June: 145 records
- July: 262 records
- August: 174 records
- September: 206 records
- October: 183 records
- November: 207 records
- December: 104 records
Depth and water temperature
Depth
Mostly recorded at 2–15 m · Deepest record: 32.5 m
Water temperature
Recorded in surface water of 23–29 °C
Photos
(c) Ewout Knoester, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Ian Dugdale, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Yi-Kai Tea, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Ewout Knoester, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) jeyre, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Mike Burnett, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Longnose filefish, beaked leatherjacket, Beaked Leather-jacket, Coral Filefish, Harlequin filefish, Longnosed Filefish, longnose filefish, Long-nose Leatherjacket
Names in 5 more languages
- German
- Harlekin-Feilenfisch, Orangepunkt-Feilenfisch, Palettenfeilenfisch, Palettenstachler
- French
- Bourse Arlequin, Lime à Taches Oranges, Poisson-lime à taches orange, Poisson Lime à Taches Oranges
- Japanese
- Tengukawahagi, テングカワハギ
- Thai
- ปลางัวจมูกยาว
- Simplified Chinese
- 尖吻單棘魨, 尖吻魨, 尖嘴砲彈, 玉黍砲彈
Other scientific names: Oxymonocanthus longirostris
Similar species
LeatherjacketAluterus monoceros
Scrawled filefishAluterus scriptus
Spiny-tailed LeatherjacketAcanthaluteres brownii
Bridled LeatherjacketAcanthaluteres spilomelanurus
Brown LeatherjacketAcanthaluteres vittiger
Broom filefishAmanses scopas
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).
- 1,574 open-data records from 1801 to 2023.
- Species data updated October 30, 2026.
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