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VOL. 11, ISSUE 1 (2026)
Effect of dietary Spirulina fusiformis on chosen physiological, biochemical parameters and colour changes in rusty cichlid (Iodotropheus sprengerae) reared in ammonia-contaminated water
Authors
G Theivandran, J Sakthibama, A Mohaideen, G Petchidurai, L Roselin Rajathi
Abstract
This study investigated the effects of Spirulina fusiformis
supplementation on growth performance, feed utilization, ammonia tolerance, and
colouration of the ornamental fish Iodotropheus sprengerae under
ammonia-contaminated conditions. Fish were fed diets containing varying levels
of Spirulina for three months. Growth parameters, feeding rate, conversion
efficiency, ammonia concentration, and tissue colouration were evaluated
monthly. Spirulina supplementation significantly improved weight gain, growth
rate, and feed conversion efficiency compared to the control group. Among the
treatments, the 1.2 g/100 L supplementation level produced the best overall
performance, while higher inclusion did not yield proportional benefits.
Additionally, Spirulina-treated groups exhibited markedly reduced ammonia
concentrations in rearing water, indicating improved water quality. Enhanced
pigmentation of fin, skin, and muscle tissues was also observed in
Spirulina-fed fish. The findings suggest that Spirulina fusiformis is an
effective functional feed additive for improving growth, stress tolerance,
water quality, and aesthetic traits in ornamental fish culture.
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Pages:270-274
How to cite this article:
G Theivandran, J Sakthibama, A Mohaideen, G Petchidurai, L Roselin Rajathi "Effect of dietary <i>Spirulina fusiformis</i> on chosen physiological, biochemical parameters and colour changes in rusty cichlid (<i>Iodotropheus sprengerae</i>) reared in ammonia-contaminated water". International Journal of Entomology Research, Vol 11, Issue 1, 2026, Pages 270-274
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