Performance of Indian and vietnamese strain of Anabas testudineus under captive condition in the lower Brahmaputra Valley zone of Assam

The present study was performed for evaluating the growth and production performance of Indian and Vietnamese strain of Koi (Anabas testudineus) in the rectangular cemented tank of size (10 ft X 6 ft) in the experimental farm of Livestock Research Station, Hekera, Mondira, Assam Agricultural University, Assam for the period of four months during, 2018. There were two treatments each with three replications. Three tanks each under treatment-1 (T1)and treatment-2 (T2) were stocked@ 200 number/ tank with Indian strain of climbing perch fry of (0.60±000) g and Vietnamese strain of climbing perchfry bearing weight of (0.59±001) g, respectively. Fish were fed with commercial pellet feed named “Abis” two times in a day @ of 60% (1st month), 25% (2nd month),10% (3^rd Month) and 5% (4^thmonth) of their body weight in all treatments. The mean FCR value of T1 (Indian Koi) and T2 (Vietnamese Koi) were obtained 1.49±0.01 and 1.29±0.00, respectively. The water quality parameters of tank water monitored monthly were within acceptable range for fish culture. The lowest SGR (%) value (2.91±0.000) was recorded in T1 and the highest (6.09±0.003) in T2. The survival rates were 85.33±0.88 and 90.67±1.45 for T1 and T2, respectively.The mean harvesting weight of treatment2 was significantly higher than treatment1. After four months of rearing, the highest fish production of 53.56kg/0.002ha was obtained from Vietnamese strain of Koi in (T1) followed by17.75kg/0.002ha from Indian strain of climbing perchin (T2), respectively. The highest benefit or net return for T2 was Rs 4350/-0.002 ha and BCR of 1.68 followed by Rs. 1153/0.002hain T1 with BCR value of 1.35.The results demonstrated that the higher mean growth and production were observed in Vietnamese strain (T2) than Indian strain (T1) of climbing perch.