Cross Back Arowana is a natural colorant variant that is originated from the Bukit Merah Lake in Perak, Malaysia.  The Cross Back Arowana is the most beautiful golden color variant of the Asian Arowana.  In the lake, different populations in the smaller tributaries have their subtle differences compared to other populations. Like all Cross Back Arowana, the gold rims on the scales reach only the 4th rows of scales when young but will spread towards the back until it reach the 6 ^th level upon maturity.  Thus, its name “Cross Back” means “Golden coloration crossing over the back”. The Full Gold Arowana has gold based core and a gold rim on the outer edge.  A good specimen will appear as a solid piece of gold when is fully matured. Traits of a Full Gold Arowana are lighter color fins and eyes as compared to the other varieties of Cross Back Arowana.  All Cross Back Gold Arowana are graded according to how fast the gold rims of the scales reach the 6 ^th rows scales.