Heniochus diphreutes, commonly called the False Moorish Idol, is a captivating butterflyfish species prized for its distinctive black and white vertical stripes and elongated dorsal fin filament. This medium-sized fish typically reaches up to 20 cm in length and is best suited for experienced marine aquarists due to its specialised care requirements.
Care Level: Moderate to advanced. This species requires a mature aquarium with stable water parameters and ample live rock for grazing.
Temperament: Generally peaceful but can be territorial towards conspecifics or similar species. Best kept singly or as a mated pair in larger tanks.
Diet: Omnivorous. Feed a varied diet including high-quality marine flakes, pellets, frozen mysis shrimp, brine shrimp, and algae-based foods to ensure optimal health.
Minimum Tank Size: At least 150 litres (40 US gallons) to provide sufficient 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 moderate lighting and moderate water flow are ideal to mimic natural reef conditions.
Placement: Provide plenty of live rock for grazing and hiding spots. Avoid overcrowding to reduce stress and aggression.
Origin: Indo-Pacific region.
Maximum Size: Approximately 20 cm (8 inches).
Heniochus diphreutes is a stunning addition to marine aquariums, offering both beauty and interesting behaviour. However, due to its specialised diet and sensitivity, it is recommended for hobbyists with some experience in marine fish care.
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