Author(s): Ghanshyam N Jha, Debajit Sarma, AS Charak, Narinder Paul, Raj Kumar, Amitesh Sharma and T Tiwari

Abstract: This work is a portion of our previous PhD thesis work and represents a comparative data of separately published works. The results related to change in carcass composition and total carotenoids of two important coldwater fishes viz. Barilius bendelisis and Schizothorax rechardsonii of almost similar length and weight as collected from local streams and reared in laboratory condition for sixty days in triplicate to study the effect of spirulina (Spirulina platensis) fortified diets (0, 3, 5, 7 & 10%) are compared and represented here. Supplementation of 3-10% dietary spirulina (T₁ to T₄) meal significantly increased crude protein (CP)% in both the experimental fishes, when compared with control group (T₀). There was a significant change in crude fat also in case of B. bendelisis, while no significant effect for the same on S. rechardsonii. Whereas, supplementation of 5-10% dietary spirulina (T₂ to T₄) significantly increased body carotenoids (μg/g) compared to control group (T₀). Spirulina meal Supplementation has potential to enhance the coloration and body composition of Schizothorax richardsonii and Barilius bendelisis. Spirulina meal at 5-10% supplementation of the diet provided highest carotenoid accumulation in the flesh among the groups which may help farmers as well as other stakeholders in realizing more profits in the culture of these species and considering as ornamental fish.

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