Polyculture of Mystus gulio (Hamilton 1822) in salinity intrusion prone areas of Bangladesh

A 120 days long culture experiment was conducted to evaluate the growthperformance, nutrient utilization and profitability of Mystus gulio in salinity intrusion prone areasof Bangladesh. Nine uniform earthen ponds (1 decimal=40 m2) with stocking density of 350fish/decimal were randomly divided into three treatments in triplicate groups with differentspecies composition explicitly T1 (mono culture, 350 M. gulio), T2 (polyculture, 250 M. guliowith 60 Oreochromis niloticus and 40 Rhinomugil corsula), and T3 (polyculture of 250 M. gulio,with 40 O. niloticus and 60 R. corsula). Fishes were fed up to 20% of body weight at the startand 6% at the end. At the end, significantly (p 0.05) differencewith T1 and T3. Significantly (p<0.05) higher production (kg ha-1) were observed in T2(3,866.37±69.66) followed by the T3 (3,489.968±62.22) and T1 (1,682.50±21.93).Significantly higher net profit (BDT ha-1) were observed in T3 (158814.88) over T1 (142599.76)and T2 (129071.86). Based on the present findings, poly culture of M. gulio with O. niloticus andR. corsula may be suggested to the fish farmer as a potential climate change adaptation option toutilize the vast salinity intrusion prone areas of coastal Bangladesh.