King Arowana can come in any colour variety. It is a deformity caused by damage to the fry resulting in compression and breakage of the upper vertebrae.
This result is this striking but unusually regular deformity in the back that some consider to be majestic. They are highly sought after and the price of the fish can be significantly increased by this occurring.
Waiting lists for King Arowana can be huge as often there are several customers waiting for the deformity to occur and purchase the young immediately on reaching a saleable age.