Chaetodon auriga, commonly known as the Threadfin Butterflyfish, is a visually captivating species prized for its bold patterns and graceful movements. This small variant is perfect for marine enthusiasts seeking to add a splash of colour and activity to their reef or fish-only aquarium.
Care Level: Moderate to advanced. Butterflyfish can be sensitive and require stable water conditions.
Temperament: Generally peaceful but may be territorial towards conspecifics or similar species. Best kept singly or as a mated pair in larger tanks.
Diet: Omnivorous. Requires a varied diet including meaty foods such as mysis shrimp, brine shrimp, and specialised prepared diets. Supplement with algae and sponge-based foods to mimic natural grazing behaviour.
Minimum Tank Size: 120 litres (approximately 30 gallons) recommended to provide ample swimming space and territory.
Reef Compatibility: With Caution. May nip at coral polyps and sessile invertebrates; suitable for fish-only or well-established reef tanks with caution.
Lighting and Water Flow: Standard reef lighting and moderate water flow are appropriate to replicate natural habitat conditions.
Placement: Provide plenty of live rock for grazing and hiding spots. Ensure tank mates are peaceful and non-aggressive.
Origin: Indo-Pacific region.
Maximum Size: Up to 20 cm (8 inches) in length.
Due to their specialised diet and sensitivity, it is recommended to acclimate this species carefully and maintain excellent water quality. Regular feeding with a varied diet will help ensure vibrant colouration and health.



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