Species Description…

Scientific Name: Chaetodon rainfordi

Common Name: Rainford's Butterflyfish

Species Group: Butterflyfish

Habitat: Reef Safe with Caution

Care Level: Intermediate

Temperament: Peaceful

Diet Type: Omnivore

Role in Aquarium: Showpiece Fish

Max Fish Length: 6 (inches)

Min Aquarium Size: 75 (gallons)

Native Range: Western Pacific, primarily found along the Great Barrier Reef and surrounding Australian waters

Chaetodon Rainfordi - The Rainford's Butterflyfish

Chaetodon Rainfordi (The Rainford's Butterflyfish)

Endemic to the coastal waters of Australia, primarily found in coral reefs and rocky shorelines.
Recognized by its striking yellow-orange body, adorned with delicate blue stripes and a black spot near the base of the dorsal fin.
A relatively peaceful species that thrives in well-structured aquariums with stable conditions.
Typically found alone or in pairs, occasionally forming small groups in the wild.
Best suited for experienced aquarists due to its specialized dietary requirements and sensitivity to water conditions.

Omnivorous, feeding on coral polyps, small invertebrates, and algae in the wild.
In captivity, it requires a diet rich in sponge-based foods, frozen mysis shrimp, and marine algae.
May be difficult to acclimate to prepared foods and often prefers fresh or live options.
Frequent, small feedings throughout the day support its high metabolism and natural foraging behavior.
A balanced and diverse diet helps maintain its vibrant coloration and overall health.

Commonly found in shallow coral reef environments with moderate water currents.
Prefers clear, well-oxygenated waters and rocky formations for shelter.
Aquarium setups should include live rock structures to provide grazing opportunities and hiding spaces.
Thrives in pristine water conditions, requiring high-quality filtration.
Avoiding aggressive tankmates ensures a stress-free environment for this species.

Optimal water temperature: 75-80°F (24-27°C) to support metabolic health.
Recommended pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires excellent water quality, with frequent water changes to remove waste buildup.
Due to its coral-feeding nature, it is not well-suited for reef aquariums.
Providing a well-structured environment with live rock encourages natural behaviors and feeding.

Generally peaceful but can be territorial toward similar species.
Compatible with tangs, wrasses, and other non-aggressive reef fish.
Not reef-safe, as it may consume soft corals and sessile invertebrates.
Should not be housed with aggressive tankmates that may outcompete it for food.
Best kept singly or in a carefully managed pair to reduce stress and competition.

An active swimmer that enjoys open spaces with coral formations.
Often observed picking at rock surfaces and investigating its surroundings.
May take time to adjust to captivity but becomes more confident over time.
Providing live rock encourages natural foraging behavior and a sense of security.
Over time, it may recognize its caretaker and respond actively during feeding sessions.