Two ICAR-CIFRI Pen HDPE pens (100 m2 area) were installed in the reservoir with provisions made in the pen to adjust heights during the monsoon to prevent the escapement of fish due to flooding making it a climate-smart adaptation system. The pen culture of stocked Indian Major Carps (IMCs) was managed by the society in PPP mode. Indian Major Carp Catla Labeo catla (18.28±0.23g), Rohu Labeo rohita (5.2±0.12g), Mrigal Cirrhinus mrigala (5.5±0.08g) seeds were stocked in the ratio 2:1:1 at the rate of 250 fingerlings per square meter in pens (100 m2) in duplicate. The fishes were fed with pelleted feed (ICAR-CIFRI CAGEGROW feed) twice a day at the rate of 2–3% of body weight. The fish were raised for 5 months, from September 2022 to January 2023. The average weight recorded at the end of the culture period was 283.13±1.70g, 186.26±47.02g, and 116.00±0.87g in L. catla, L. rohita, and C. mrigala respectively. The survival of fish ranged from 80 to 88%. The specific growth rate (SGR) of L. catla, L. rohita and C. mrigala were 1.82, 2.56 and 2.03, respectively. The species-specific net fish production per pen was recorded as 2601 kg, 898.8 kg, and 546 kg for catla, rohu, and mrigal, respectively. The harvested fish from the pens were released into the reservoir for reservoir fish production, will be resulting in livelihood support for the displaced tribal fishers of the affected villages.
This technology was an eye-opener for the 370 fishers of the cooperative society which yielded about 8.1 tonnes of fish from two pens, which could ultimately produce 36 tonnes in a year from the reservoir with an additional average income of Rs. 24,000 per fisher (@Rs. 250 per kg). Society is highly motivated by the technology demonstration and will be implemented it for reservoir productivity enhancement in the coming years.
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