en aquaculture aquaculture پژوهشي Orginal research papers <p>The aim of this study was to evaluate the effects of stocking density on growth, production and profitability of farming <em>Labeo bata</em> fry in earthen rearing ponds for a period of 60 days. <em>Labeo bata</em>, fry (mean initial length, 3.42 &plusmn; 0.07cm and weight,&nbsp; 1.02 &plusmn; 0.06 g) were stocked at 750, 1000 and 1250 decimal^-1 in treatment-1(T₁), treatment-2 (T₂) and treatment-3 (T₃) respectively, each with two replicates. Growth performance in term of final length and weight, net length and weight gain, specific growth rate were significantly higher (P<0.05) in T₁ than those of T₂ and T₃. Feed Conversion Ratio followed the opposite trends as specific growth rate. Production in terms of weight was found to be higher in T₂ followed by T₃ and T₁, because of higher stocking density compare to T₁ and higher weight gain in comparison to fish reared under T₃ as well as insignificance variation in survival rate between T₁ and T₂. Consistently higher net benefits were found from treatment T₂, which could be recommended to adopt. Moreover, further studies are also required to find out suitable culture technique that could enhance the production experimenting with different feeding frequencies as well as by manipulating culture systems.&nbsp;</p> Stocking density, Labeo bata, Earthen pond, Yield, Cost-benefit analysis 1068 1075 http://jifro.ir/browse.php?a_code=A-10-1591-1&slc_lang=en&sid=1 T Ahmed taldu16@gmail.com 100319475328460031091 100319475328460031091 No Department of Fisheries, University of Dhaka, Dhaka-1000, Bangladesh M.H. Faruque hasanfaruque28@du.ac.bd 100319475328460031092 100319475328460031092 Yes Department of Fisheries, University of Dhaka, Dhaka-1000, Bangladesh M.A Kabir makabir@du.ac.bd 100319475328460031093 100319475328460031093 No Department of Fisheries, University of Dhaka, Dhaka-1000, Bangladesh M.G. Mustafa mghulam@du.ac.bd 100319475328460031094 100319475328460031094 No Department of Fisheries, University of Dhaka, Dhaka-1000, Bangladesh