Gnathanodon speciosus, commonly known as the Golden Trevally, is a visually captivating marine fish prized for its bold yellow and black striped juvenile pattern. This species belongs to the Carangidae family and is a popular choice for experienced marine aquarists seeking an active and engaging fish.
Care Level: Moderate to advanced care is recommended due to its active nature and size potential.
Temperament: Generally peaceful but can become territorial or boisterous as it matures. Best housed with similarly sized or larger non-aggressive tank mates.
Diet: Carnivorous; thrives on a varied diet including high-quality frozen or live meaty foods such as shrimp, krill, and small fish. Supplement with marine pellets to ensure balanced nutrition.
Minimum Tank Size: A minimum of 300 litres (approximately 80 gallons) is advised to accommodate its active swimming behaviour and growth potential.
Lighting Requirements: Standard marine aquarium lighting is sufficient; no special lighting needs.
Water Flow: Moderate to strong water movement mimics natural reef environments and supports healthy respiration.
Placement: Provide ample open swimming space with some rockwork or coral structures for shelter. Juveniles appreciate hiding spots but require room to swim freely.
Origin: Tropical Indo-Pacific regions.
Maximum Size: Juveniles sold at this size will grow up to 70 cm in the wild; in captivity, growth may be slightly smaller but still substantial.
Reef Safe: With Caution – may prey on smaller invertebrates or fish; not recommended for delicate reef tanks.
Due to their size and activity, Gnathanodon speciosus juveniles are best suited for large, well-established marine aquariums with experienced keepers. Regular water quality monitoring and a varied diet will promote health and longevity.
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