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Brown Butterflyfish

Chaetodon collare

  • Fish
  • IUCN: Least concern
  • Usual depth2–23 m
  • Water temperature21–30 °C
  • Best monthsJanuary, February, and March
  • How commonOccasional
All species

Photo credit: (c) Jean, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

The red-tailed butterflyfish, also known as the brown butterflyfish, Pakistani butterflyfish or redtail butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae.

Text from the Wikipedia article “Redtail butterflyfish”, 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: 101 records
  • February: 107 records
  • March: 114 records
  • April: 64 records
  • May: 37 records
  • June: 11 records
  • July: 28 records
  • August: 36 records
  • September: 36 records
  • October: 37 records
  • November: 68 records
  • December: 90 records

Depth and water temperature

Depth

Mostly recorded at 2–23 m · Deepest record: 22.5 m

  • 0–10 m: 7 records
  • 10–20 m: 0 records
  • 20–30 m: 1 records

Water temperature

Recorded in surface water of 21–30 °C

  • 20–22 °C: 2 records
  • 22–24 °C: 0 records
  • 24–26 °C: 8 records
  • 26–28 °C: 9 records
  • 28–30 °C: 57 records

Names and classification

English
Brown Butterflyfish, Collare Butterflyfish, Collared Butterflyfish, Pakistani Butterflyfish, Redtail Butterflyfish, Red Tailed Butterfly, Red-tailed Butterflyfish, whitecollar butterflyfish
Names in 3 more languages
German
Halsband-Falterfisch
French
Chétodon à collier
Thai
Phisueakhokhao, ผีเสื้อคอขาว

Other scientific names: Chaetodon collaris, Chaetodon fowleri, Chaetodon parallelus, Chaetodon praetextatus, Chaetodon viridis, Chaetodontops collare

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).
  • 313 open-data records from 1946 to 2014.
  • Species data updated November 1, 2026.

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