The Acanthurus tristis, commonly referred to as the Blue-lined Surgeonfish, is a visually captivating species prized for its vibrant blue markings and elegant swimming behaviour. This small variant is perfect for marine aquarium enthusiasts seeking a tang with moderate care requirements and a peaceful temperament.
Care Level: Moderate to advanced. This species requires stable water parameters and a well-established aquarium.
Temperament: Generally peaceful but can show territorial behaviour towards other tangs, especially in smaller tanks.
Diet: Primarily herbivorous. Provide a varied diet rich in marine algae, seaweed sheets, and high-quality herbivore pellets or flakes. Occasional meaty foods such as mysis shrimp can be offered to supplement nutrition.
Minimum Tank Size: At least 180 litres (approximately 50 gallons) to allow ample swimming space and reduce territorial aggression.
Lighting Requirements: Standard marine aquarium lighting is sufficient. Ensure lighting supports healthy algal growth for grazing.
Water Flow: Moderate to strong water movement mimics natural reef environments and promotes fish health.
Placement: Best kept in a mature reef or fish-only marine tank with plenty of live rock for grazing and hiding spots.
Origin: Not Provided.
Maximum Size: Approximately 20 cm (8 inches) in length.
Reef Safe: With Caution. May nip at coral polyps and sessile invertebrates, so caution is advised in reef setups.
Overall, the Acanthurus tristis is a stunning addition to larger marine aquariums, offering both beauty and activity. Proper care and tank conditions will ensure a healthy and vibrant fish.
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