Suitable Stocking Density Ensures Best Production and Economic Returns in Floating Cage Aquaculture System

Abstract

The striped dwarf catfish Mystus cavasius being a least concern small indigenous fish it is necessary to protect the species from extinction in the near future. An experiment on production and economic feasibility of Mystus cavasius in cage was conducted for a period of six months from March to August 2020 in beel hilla at Naogaon district of Bangladesh. The study was carried out in nine cages (rectangular 8x5x2 feet size) under three treatments namely T1, T2 and T3 performed with the stocking densities of 46 fry m-2, 92 fry m-2 and 137 fry m-2 and designed each with three replications. The fish was fed with commercial pellet feed (containing 30% crude protein) twice daily at the rate of 5-7% of fish body weight. The total production was found to be significantly (p<0.05) highest in T3 among the three treatments. The net profit was better in T3 than T1 and T2 in terms of better production and money. So, stocking density of Mystus cavasius at the rate of 137 fry m-2 in cage could be an economically feasible aquaculture technique for fish farmers.

Efficacy of using sunflower meal as an ingredient, and partial fishmeal‐replacer, in practical feed formulated for stinging catfish (Heteropneustes fossilis)

“…This study was designed to find out the effect of replacement of FM by SFM on growth performance, body composition, and haematological profile of H. fossilis and also to find out the optimum replacement level of FM by SFM. The water quality parameters that are the prerequisite for good fish production (Rahman et al., 2017) were within the optimum range for stinging catfish culture during the experiment (Ahmmed et al., 2017; Rahman et al., 2014; Saha et al., 2022).…”