effect of different live foods source (culex larvae, chironomus larvae and artemia) on pigmentation of electric yellow fish (labidochromis caeruleus)

objective: the orange-red spectrum of  the skin of  electric yellow (labidochromis caeruleus) is  one  of  the  idealistic and  necessary  schemas sought  by  aquarists  and commercial producers. in this study, the effect of live foods meal on the skin coloration of juvenile electric yellow was examined. methods: 270 fish with an average living body weight was 0.42 ± 0.11 g, and average total length was 3.3 ± 0.35 cm. their sex was not taken into consideration. . the  fish  were  fed  twice  in  the  morning  and  afternoon  by  3-5 percent of the biomass for 8 weeks. the six different treatments (three replicates/treatment) used in the experiment were used. skin color was measured in below the dorsal fin of all fish. measurements were recorded at the end of the feeding trial using a konica minolta chroma meter cr400. results: at the end of the trial, the carotenoid supplemented diets significantly increased the values of redness (a*), yellowness (b*), and chroma (c*), and decreased the values of lightness (l*) and hue (hoab) on the tail, body, and head areas (p