The common goldfish Carassius auratus auratus is an ornamental freshwater fish species with high market
value. The market value of ornamental fish can be determined through some parameters, one of them is brightness
of the fish scales. Brightness level may be enhanced by supplementing plant powder containing carotenoid into
fish diet. The purpose of this research was to examine the scale brightness level of common goldfish fed diet
supplemented with Sargassum sp. and pumpkin powder, and to determine the dose of those powders that allows
higher brightness level of scale. The feed of common goldfish was supplemented with either Sargassum sp. or
pumpkin powder at the doses of 10, 20 and 30%, and without supplementation as control. Fishes were reared for
75 days and fed diet at feeding rate of 5% biomass daily. The results of ANOVA test showed that the Sargassum
sp. and pumpkin mill addition on food significantly improved of scales brightness of common goldfish. Increasing
supplementation levels of Sargassum sp. and pumpkin powder increased brightness level of scale. The highest
improvement in brightness was the fish that fed by 30% concentration of Sargassum sp. flour with the value scale
of brightness was 2.67 and the total number of 2,890.67 chromatophore cells. The results suggest that Sargassum
sp. powder is better to improve the brightness level of common goldfish scale.