The Heniochus acuminatus, or Longfin Bannerfish, is a popular choice among marine aquarium enthusiasts due to its graceful appearance and active behaviour. Recognisable by its striking black and white vertical bands and long, trailing dorsal fin, this butterflyfish adds dynamic movement and visual interest to larger reef tanks.
Care Level: Moderate – requires stable water conditions and a well-established aquarium.
Temperament: Generally peaceful but can be territorial towards conspecifics or similar-shaped fish. Best kept singly or in a mated pair.
Diet: Omnivorous – accepts a variety of foods including high-quality frozen preparations, marine algae, mysis shrimp, and specialised herbivore flakes or pellets. Supplement diet with live rock grazing to mimic natural feeding habits.
Minimum Tank Size: 180 litres (approximately 50 gallons) to provide ample swimming space and reduce stress.
Reef Safety: Yes – compatible with reef environments, though may nip at coral polyps occasionally; monitor behaviour closely.
Lighting Requirements: Standard reef lighting is suitable; no special lighting needed.
Water Flow: Moderate water movement preferred to simulate natural habitat conditions.
Placement: Provide plenty of open swimming areas along with live rock for grazing and shelter. Avoid overcrowding to reduce territorial disputes.
Origin: Indo-Pacific region, including the Red Sea and Great Barrier Reef.
Maximum Size: Up to 25 cm (10 inches) in length.
When introducing the Heniochus acuminatus to your marine aquarium, ensure stable water parameters and a varied diet to maintain vibrant colours and health. This extra large specimen is ideal for experienced hobbyists seeking a visually stunning and active butterflyfish.
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