ARTICLE COURTESY OF UNOAQUATIC: CROSS BACK GOLDEN (X-BACK) there are several names for it, some calls it Cross Back Golden, Pahang Gold, Malayan Bonytongue, Bukit Merah Blue, Taiping Golden and the Malaysian Gold. These are basically referring to the same type of fish - the Golden Arowana. It will have golden color completely crossing its back when the fish matures. The main reason for so many terminologies is because Cross Back Golden Arowanas can be found in various parts of Malaysia such as the states of Perak, Trengganu, Bukit Merah Lake and Johor. Due to its relatively low supply and great demand in the market, it is currently one of the most expensive color specimen for the Asian Arowana. The main reason for its high price is due to its scarcity as well as lesser number of gametes on each spawn. Currently, only Malaysia and Singapore farms are breeding the Malaysian Golden Arowanas. Cross-Back Goldens are further classified into Blue-Based, Purple-Based, Gold-Based, Green-based and the Silver-based types, implying the core color of the scales. The terms Blue-Based and Purple-Based are being used interchangeably by some breeders since these Cross Backs exhibit Purple Core when viewed at an angle but appears totally blue at another. Gold-Based is one of the Cross Back with a flourish of golden color at its scales right into the core of the scales instead of one that is blue or purplish in colors. The Golden-Based variety seems to have color crossing its back earlier than the rest. This is one type of arowanas that is most stunning to look at since a mature fish is able to achieve the much dreamed about 24K gold color which other golden varieties are incapable of! Just imagine a 2-footer arowana, fully wrapped with golden scales swimming effortlessly, making occasional turns with ease and confidence to show that it is indeed the King of Aquarium. Of course, there are also the exotic Green-Based and Silver-Based types which have green and silvery cores on its scales respectively. It is also becoming more difficult to differentiate the sub-varieties since it is quite common to find a fish that has the qualities of two or more sub-varieties. This is due to the inter-breeding between these different varieties by the farmers and thus most Cross-Backs are not as pure as it used to be. But on the other hand, it did produce a fish with enhanced qualities from each variety. The breeding of other varieties other varieties like the Platinum White Golden Arowana and the Royal Golden Blue Arowana has also evolved over recent years. Both of these command premium price tags and are very much sought in Japan due to their scarcity. Malaysian Farms constitute most exports of these high quality fish in the world as this fish originates there.