Synthetic and Natural Pigments (Red hawthorn) effects on the Color of the Severum Fish (Heros severus)

In this study, we have investigated the effects of red hawthorn powder= Valik (RHP) (Crataegus monogyna) as a natural pigment sources and Astaxanthin as synthetic pigment source on growth, and skin color of Severum (Heros severus) with initially average weight 8.5 ± 0.57 for a period of 60 days. Basal diet was supplemented with 0 (control), 1 g kg-1 Astaxanthin, 5, 15 and 25 g kg-1RHP in a totally randomized design trial in triplicate groups. The results showed significant differences in growth and skin color between control and treatment groups (P