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Threadfin butterflyfish (Chaetodon auriga)

Photo of Threadfin butterflyfish (Chaetodon auriga)

Key facts

Scientific name
Chaetodon auriga
Common name
Threadfin butterflyfish
Category
Fish
Family
Chaetodontidae
Genus
Chaetodon
Size
15–23 cm
Depth
1–60 m
IUCN status
Least concern (LC)
Danger level
Harmless
Habitats
coral-reef, rocky-reef
Behaviours
solitary, pair
Ocean zones
Asian Pacific, Indian Ocean & Red Sea

Description

Chaetodon auriga reaches 23 cm. White to yellow body with 10-12 thin diagonal dark lines forming chevrons, large yellow area on rear body, black eye band, characteristic thread-like dorsal streamer extending as ponytail (hence threadfin). Lives from 1 to 60 m on coral and rocky reefs of entire tropical Indo-Pacific (Red Sea to Hawaii). Opportunistic, feeds on polyps, worms and algae. Often in pairs. Classic photo subject of Red Sea safaris.

Photo of Threadfin butterflyfish

Photo of Threadfin butterflyfish (Chaetodon auriga)Photo of Threadfin butterflyfish (Chaetodon auriga)

Frequently asked questions

How big is the Threadfin butterflyfish?
Threadfin butterflyfish (Chaetodon auriga) reaches 15–23 cm in length.
At what depth can you find the Threadfin butterflyfish?
Threadfin butterflyfish is found between 1–60 m deep.
Is the Threadfin butterflyfish dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Threadfin butterflyfish?
IUCN status: Least concern (LC).
Where can you find the Threadfin butterflyfish?
Found in: Asian Pacific, Indian Ocean & Red Sea.

Other species in the genus Chaetodon

  • Chaetodon sedentarius - Reef butterflyfish
  • Chaetodon ocellatus - Spotfin butterflyfish
  • Chaetodon fasciatus - Diagonal butterflyfish
  • Chaetodon semilarvatus - Bluecheek butterflyfish
  • Chaetodon humeralis - Threebanded butterflyfish
  • Chaetodon lunula - Raccoon butterflyfish

Other species in the family Chaetodontidae

  • Forcipiger flavissimus - Longnose butterflyfish
  • Johnrandallia nigrirostris - Barberfish
  • Heniochus diphreutes - Schooling bannerfish
  • Heniochus varius - Humphead bannerfish
  • Forcipiger longirostris - Longnose Butterflyfish
  • Prognathodes falcifer - Falcate Coralfish

Sources

  • Taxonomy: WoRMS (AphiaID 218730)
  • Photos: iNaturalist (CC BY-NC)
  • Distribution: GBIF (taxonKey 2385390)
  • Conservation: IUCN Red List
  • Encyclopedia: Wikipedia