Evaluating Schizochytrium Supplementation on Growth Performance and Skin Colouration in Electric Yellow Cichlids (Labidochromis caeruleus)

In this study, the effects of Schizochytrium supplementation to feed on growth and skin colouration in electric yellow cichlid (Labidochromis caeruleus) were investigated. Fish (1.93 ± 0.23 initial weight) were fed with commercial fish feed (C) and commercial fish feed supplemented with 0.5% (D05) and 1% (D1) Schizochytrium for 60 days. The D05 and D1 groups displayed the highest FW, WG, and SGR values, with similarly favourable FCR levels compared to the C group. Among the groups receiving Schizochytrium-supplemented feeds, no statistically significant differences in growth performance were observed. The D1 group exhibited statistically significant differences from the C and D05 groups concerning L* and Hue values (p < 0.05). The a* value in the D05 and D1 groups showed a statistically significant difference compared to the C group. However, there were no statistically significant differences in the b* and Ch values among all groups. To conclude, the inclusion of Schizochytrium as a dietary supplement markedly promoted growth performance and facilitated the attainment of marketable size in electric yellow cichlids. Additionally, although the enhancement in skin colouration resulting from the addition of 0.5% Schizochytrium to the feed did not reach statistical significance, it hints at a promising advantage that could enhance the aesthetic allure and market value of the fish.