Species Description…

Scientific Name: Chaetodon austriacus

Common Name: Blacktail Butterflyfish

Species Group: Butterflyfish

Habitat: Reef Safe with Caution

Care Level: Advanced

Temperament: Peaceful

Diet Type: Omnivore

Role in Aquarium: Showpiece Fish

Max Fish Length: 5.5 (inches)

Min Aquarium Size: 75 (gallons)

Native Range: Red Sea and the western Indian Ocean

Chaetodon Austriacus - The Blacktail Butterflyfish

Chaetodon Austriacus (The Blacktail Butterflyfish)

Endemic to the Red Sea and the Gulf of Aden, primarily found in coral reef environments.
Distinguished by its yellow body, bold black bands, and a distinctive black mask over its eyes.
A resilient species that can adapt well to a captive setting when provided with proper care.
Generally peaceful, but may exhibit mild territorial tendencies toward other butterflyfish.
Requires a well-structured marine aquarium with both swimming space and hiding spots.

Omnivorous, feeding on coral polyps, small invertebrates, and algae in the wild.
In captivity, it readily consumes high-quality marine pellets, frozen shrimp, and algae-based foods.
Regular feeding of sponge-based food is essential to maintain proper nutrition and color vibrancy.
Multiple small meals throughout the day help sustain its energy levels.
A varied diet contributes to overall health, reducing the risk of dietary deficiencies.

Prefers shallow coral reefs with abundant rock formations for shelter and foraging.
Thrives in stable water conditions with moderate to strong water movement.
Aquarium setups should incorporate live rock to mimic its natural habitat.
Requires excellent water quality and well-oxygenated conditions for long-term health.
Providing adequate space for swimming and hiding promotes a stress-free environment.

Optimal water temperature: 75-80°F (24-27°C) to support a healthy immune system.
Recommended pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires strong filtration and regular water changes to maintain stable parameters.
Acclimating the fish properly to a mature aquarium reduces stress and ensures a smooth transition.
Providing caves and rock structures helps establish a secure and comfortable habitat.

Generally peaceful, but can be territorial when housed with other butterflyfish.
Compatible with tangs, wrasses, and other non-aggressive reef fish.
Not considered reef-safe, as it may consume soft corals and small invertebrates.
Should not be housed with overly aggressive fish that may stress or outcompete it for food.
Providing ample swimming space reduces the likelihood of territorial disputes.

An energetic and alert fish that actively explores its surroundings.
Frequently seen picking at rock surfaces and foraging for food.
May establish a small territory but generally coexists well with compatible species.
A well-structured tank setup with live rock encourages natural grazing behaviors.
Over time, it may become accustomed to its caretaker and show recognition, particularly during feeding sessions.