Catfish seed production is essential for species diversification in freshwater aquaculture. Catfish seed is collected naturally from paddy fields or swampy areas. However, there is a big gap between supply and demand. During the transportation of seeds, a high rate of mortality occurs due to fluctuation in water parameters like temperature, pH, dissolved Oxygen, etc. CIFE has developed a new model catfish hatchery comprised of a three-tier rearing system. Salient feature: Mature catfishes released into cemented/ fiberglass breeding circular tank for mating to obtained eggs. Under optimum environmental conditions, fertilized eggs hatch within 26-28 hours. Hatchlings then transfer to the rearing system which comprises a three-tier system From the hatchery unit hatchlings transfer to the first-tier system, where hatchlings took 4-7 days to reach early fry. Followed by transferring early fry to second tier system, where early fry reach post fry stage in 7-12 days. Then post fry fish is transferred to the third tier system where post-fry grows to the fingerling stage within 16 鈥 23 days. Fingerlings can be reared in this system for 30 days

Read More: https://www.cife.edu.in/ITMU/tech-pdf/1.CATFISH%20HATCHERY.pdf

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