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Asian Arowana - Red Tail Golden

Scleropages formosus

Also known as: Red Tail Golden Arowana, RTG Arowana, Golden Dragon Fish

Origin: Southeast Asia

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Water Parameters

Temperature2430 °C
15 °C35 °C
pH67
49
GH (Hardness)110 °dGH
0 °dGH30 °dGH
KH (Alkalinity)05 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
90 cm
Min Tank
1500 L
Lifespan
20-25
Swimming Level
top
Schooling
No
Diet
carnivore
Temperament
highly aggressive toward conspecifics; predatory toward smaller fish

About

Scleropages formosus (Red Tail Golden variety) originates from the Perak River system of peninsular Malaysia. Only the lower four scale rows display the vivid gold colouration in this variety, with the fifth row and body remaining darker. CITES Appendix I listed; every specimen sold must be captive-bred, individually microchipped, and accompanied by full CITES documentation. An extremely long-lived, large, and expensive fish requiring expert-level commitment to water quality, tank size, and feeding.

Care Guide

Water: 24-30°C, pH 6.0-7.0, soft to moderately hard; zero tolerance for ammonia or nitrite. Tank: Minimum 1500L; long, wide tank; very secure lid; minimal decor to prevent scale damage. Feeding: Carnivore; large insects, prawns, whole fish; train onto high-quality pellets where possible. Breeding: Paternal mouthbrooder; not feasible in home aquaria; hatchery breeding only. Compatibility: Keep alone; aggression toward all other fish is common, especially conspecifics.

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