The affect of different light color of physiological conditions of cantang grouper seed (Epinephelus fuscoguttatus lanceolatus) with different size

This study consisted of four treatments and three replications, namely the treatment without addition light (WL), green (G), blue (B) red (R). The grouper seeds used are 5-13 cm in size from Gondol Bali. results showed that fish fry measuring prefer compared to other light. A total 56.67% choose light, followed by as much 25.56%, 11.11% lowest was 6.67%. rearing container gave best growth response at a cm, given with While number rod cells more than cone all cantang seed size. However, highest rods cones WL treatments. occurred B G, it is presumed found G were dominated double which very sensitive color, cells. single cone, so respond quickly feed given.