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It is used for juveniles and adult fish, as part of multi-component feeds and as the only ingredient considered as a source of protein, vitamins, trace elements, biologically active substances, as a growth enhancer, immunostimulant and antibacterial agent.

Chlorella (Chlorella vulgaris) is a single-celled microalgae, rich in protein, fats, vitamins, macro- and microelements. Increasing the survival rate of juvenile fish and increasing the rate of its growth is the most important task of aquaculture. Study concluded that natural carotene sources with lower costs had similar effects The survival was 97.28%, and it was the same in all groups. This difference in groupsĮxcept the AP was significant (p. All groups decreased compared with the 50th day. Were kept in the freezer at −20☌ for 120 days to see whether the fish kept theirĬolour. The redness (a*) value of groups was significant (p. Except the AK, each group contained 50 mg/kg carotenoid additives.Īs a result of the experiment, total carotenoid values between groups were not significant Without carotenoid supplement (AK), containing astaxanthin (AA), beet root red (AP)Īnd henna (AI). The fish with an average weight of 1.21 ± 0.69 g was placed in 12 aquariums.įifteen fish were placed in each aquarium. (Maylandia estherae), using beet root red (Beta vulgaris ruba) and henna (Lawsonia inermis). This study was done to assess the effect of the colouration of the red zebra cichlid