My friend say the blue based x back cannot cross the back to the 6th level. My blue base arowana bought from melaka fish farm. My blue base x back golden the gold already 5.5 level, the golden spot on the fin already full and 11inch without tail. Now, i keep the fish in the white aquarium tank and use the white light to shine the fish. But i buy the fish with name premium blue base x back and got certificate. Do you can tell me my blue base x back can or cannot cross the back to the 6th level. Thank............................