Author(s): Md. Shariful Islam, Nilufa Begum and Syed Lutfor Rahman

Abstract: The study was conducted to attempt to evaluate production potentials of green back mullet at on-station of Bangladesh Fisheries Research Institute (BFRI) Brackishwater Station Paikgacha, Khulna management in southern Bangladesh under different stocking densities. As a result, the mullets have high rates of growth, together with that they tolerate wide ranges of environmental parameters, makes them highly attractive for culture purposes. Fingerlings of Green Back Mullet (C. subviridis) were stocked at the rate of 60000, 90000 and 120000/ha under treatment-1 (T1), treatment-2 (T2) and treatment-3 (T3) on 01 march 2015. The physico-chemical parameters of water viz. transparency, temperature, dissolved oxygen; pH, salinity, alkalinity and ammonia-nitrogen etc. recorded during the study period were found within optimum range. On the basis of mean final weight attained under T1, T2 and T3 were 24.43±1, 23.4±1.70 and 18.87±0.70g, respectively. The highest growth was obtained in T1 and lowest in T3. The mean final weight showed significant difference (P<0.05) in T1 followed by T2 and T3, when ANOVA was performed. The production as well as economic return obtained was very encouraging and culture would add an extra in such way that farmer especially in southern Bangladesh may get a chance to consume them readily than them to the market. So the present study was very important to know the proper stocking densities of the green back mullet to get the optimum production.

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