Pengaruh pengkayaan Daphnia sp. menggunakan astaxanthin terhadap kualitas warna merah ikan Cupang Halfmoon (Betta splendens, Regan 1910)

etta fish is one of the ornamental fish culture commodities that has an attractiveness and economic value that is
influenced by the quality of body color. The purpose of this study was to determine the effect of the enrichment of
the live feed with astaxanthin Carophyll© red on the quality of red color of red Betta Fish Halfmoon and to find out
the percent concentration of astaxanthin that gives an optimal value for the color of betta fish. The research method
used was completely randomized design method (CRD) with a dose of astaxanthin treatment enriched in Daphnia
sp. with 5 treatments and 5 replications; 0 g L-1 (control), 0.25 g L-1, 0.5 g L-1, 0.75 g L-1 and 1 g L-1. The fish used is
Betta fish Halfmoon with uniform red color. Observations were made for 30 days including the color quality
(intensity and brightness) using a Color reader Minolta CR-20, the calculation of the amount of Daphnia sp.
consumed during culture period, length and weight gain and water quality. Astaxanthin enrichment in Daphnia sp.
at a dose of 0.25 to 0.5 g L-1 can increase the intensity and brightness of red color in halfmoon betta fish, but the
color increase was temporary. Astaxanthin contained in Daphnia sp. increase the amount of feed consumption.