The Arowana, also known as the 'dragon fish' among aquarists, has a long body, tapered tail, and relatively large scales. Its dorsal and anal fins are nearly fused with the small caudal fin. While its maximum length is typically considered to be 0.9 m (3.0 ft), there are reports of individuals up to 1.2 m (3.9 ft). Unlike the black arowana, the silver arowana maintains the same coloring throughout its lifespan. Although adult black and silver arowanas are similar in appearance, they can be distinguished by meristics.