Threadfin Butterfly - South Pacific

Chaetodon auriga

(2 Reviews)

Threadfin Butterfly - South Pacific

Threadfin Butterfly - South Pacific

Chaetodon auriga

(2 Reviews)

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Threadfin Butterfly - South Pacific Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Reef Safe: No
Minimum Tank Size: 120 gallons
Max Size: 8 inches
The Threadfin Butterfly, Chaetodon auriga, has a bright pearly white with black striping and a bright yellow backside. They are very hardy and peaceful and can be kept with other peaceful fish, but may become aggressive towards other Butterflies with a similar pattern or coloration in smaller tanks.

They are also not reef safe since they will nip at and eat soft corals and stony polyps as well as ornamental shrimp, tube worms and anemones. Diet should include a variety of mysis and vitamin enriched brine shrimp, spirulina, nori, seaweed, marine algae, and algae based foods, 2-3 times daily.

Threadfin Butterfly (Chaetodon auriga) - A Comprehensive Guide for Saltwater Marine Aquarium Enthusiasts

Habitat and Reef Compatibility of the Threadfin Butterfly

The Threadfin Butterflyfish can be found in the Indo-Pacific region, often inhabiting coral-rich areas, lagoons, and outer reef slopes. They are generally considered reef-safe, displaying a preference for coral-rich environments. While they may occasionally nibble on coral polyps, they are not known for causing significant harm to coral reefs.

Size and Lifespan of the Threadfin Butterfly

These elegant fish typically reach a size of about 6 inches (15 centimeters) in length. Threadfin Butterflyfish can live 5 to 8 years or more in captivity with proper care.

Diet in Captivity for the Threadfin Butterfly

In their natural habitat, Threadfin Butterflyfish primarily feed on coral polyps, small invertebrates, and zooplankton. In captivity, it is essential to replicate their natural diet. Offer a varied diet of high-quality flake foods, frozen or live brine shrimp, mysis shrimp, and finely chopped seafood. Providing diverse nutrition ensures their overall health and color vibrancy.

Aquaculture and Availability of the Threadfin Butterfly

Not currently aquacultured. is committed to sourcing specimens from responsible suppliers, ensuring that hobbyists can acquire healthy and well-acclimated Threadfin Butterflyfish.

Compatibility with Other Fish and Invertebrates for the Threadfin Butterfly

Threadfin Butterflyfish are generally peaceful and can coexist harmoniously with various tank mates. Here are five compatible companions:

  • Yellow Tang (Zebrasoma flavescens): These active fish share the same peaceful temperament.
  • Royal Gramma (Gramma loreto): Peaceful and colorful, Royal Grammas make excellent tank mates.
  • Firefish (Nemateleotris spp.): Their peaceful nature complements the Threadfin Butterfly's.
  • Cleaner Shrimp (Lysmata spp.): These invertebrates are compatible and help maintain tank hygiene.
  • Blue Chromis (Chromis atripectoralis): Schooling fish that add activity and beauty to the aquarium.

Sexual Dimorphism of the Threadfin Butterfly

Threadfin Butterflyfish do not exhibit significant sexual dimorphism, making it challenging to distinguish between males and females visually.

Temperament of the Threadfin Butterfly

Known for their peaceful and non-aggressive temperament, Threadfin Butterflyfish are an excellent addition to community saltwater aquariums. They tend to explore all tank levels, adding a lively presence.

Common Names for the Threadfin Butterfly

The Threadfin Butterflyfish (Chaetodon auriga) is known by various common names, including:

  • Auriga Butterflyfish: This name is derived from its scientific name, Chaetodon auriga.
  • Threadfin Coralfish: Reflects the long, filamentous fin extensions that resemble threads.
  • Whip Butterflyfish: Refers to the whip-like filaments on its dorsal fin.
  • Horned Butterflyfish: Alludes to the prominent, horn-like dorsal spines.
  • Orange Butterflyfish: Describes its vibrant orange coloration.
  • Pacific Threadfin Butterflyfish: Indicates its habitat in the Pacific Ocean.

Tank Requirements for the Threadfin Butterfly

To provide an optimal environment for Threadfin Butterflyfish, consider the following tank requirements:

  • Minimum Aquarium Size: A tank with 120 gallons or more capacity is recommended for a single Threadfin Butterflyfish.
  • Substrate: Fine sand or crushed coral substrate is ideal.
  • Decor: Provide plenty of hiding spots and ample swimming space.
  • Live Rock: Incorporate live rock structures to mimic their natural habitat.
  • Cover: A tight-fitting lid or cover is essential to prevent escapes, as they may jump when startled.

Detailed Water Conditions for the Threadfin Butterfly

  • pH: Maintain a stable pH level between 8.1 and 8.4.
  • Salinity: Keep the specific gravity within the range of 1.023 to 1.025.
  • Water Temperature: Maintain a stable water temperature between 75°F to 80°F (23.9°C to 26.7°C).
  • Water Flow: Provide moderate water flow to simulate their natural habitat.

Why Choose the Threadfin Butterflyfish from

Selecting the Threadfin Butterflyfish from ensures access to responsibly sourced and expertly acclimated specimens. is committed to ethical collection practices, guaranteeing that hobbyists receive healthy and well-adjusted Threadfin Butterflyfish. By choosing the Threadfin Butterfly from, enthusiasts support sustainable marine trade while enjoying this captivating species' elegance and peaceful nature in their saltwater marine aquariums.

So far he is healthy, eating, and arrived looking good

Reviewed by: Eugene Abbott on June 11, 2024

Good size, beautiful, and acclimated and adjusted quickly. Is unafraid of his aquatic friends or people and pets (dog) passing by. This is the highlight of our tank.

Reviewed by: Monte Puymon on Dec. 11, 2023

Arrived healthy and active, acclimated very quickly a great addition

Reviewed by: Brian Boyle on Aug. 20, 2023

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