If your arowana doesn't get the best of its coloration, TRY AROWANA WATER TREATMENT VITAMINS.

Specially formulated for Asian and South American species of arowanna, this vitamin supplement promotes good metabolism and increases resistance to disease. It also effectively prevents hole-in-the-head disease, darken disease, and Scoliosis. Contains condensed vitamins B1, B2, B6, B12, C, A, D, E, and Beta-Glucan.

http://www.smileyaquarium.com/detail.asp?PRODUCT_ID=AZ11027