Egyptian Journal of Aquatic Biology & Fisheries Zoology Department, Faculty of Science, Ain Shams University, Cairo, Egypt. ISSN 1110 – 6131 Vol. 25(3): 505 – 524 (2021) www.ejabf.journals.ekb.eg Growth, Condition, Maturity and Mortality of the Dwarf Gourami, Trichogaster lalius (Hamilton, 1822) in a Wetland Ecosystem (Beel Dakatia), Southwestern Bangladesh Newton Saha1*, Prosun Roy2, Zubyda Mushtari Nadia3, Wasim Akram4, Ferdous Ahamed1 5 and Md. Yeamin Hossain 1Department of Fisheries Management, Patuakhali Science and Technology University, Bangladesh 2Department of Aquaculture, Bangladesh Agricultural University, Bangladesh 3Department of Aquatic Animal Health Management, Sher-e-Bangla Agricultural University, Bangladesh 4Department of Fish Genetics and Biotechnology, Khulna University, Khulna-9208, Bangladesh 5Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Bangladesh *Corresponding Author:
[email protected] ARTICLE INFO ABSTRACT Article History: The dwarf gourami, Trichogaster lalius, is a low-cost freshwater edible fish Received: Feb. 4, 2021 for the people of South Asian countries containing a variety of essential Accepted: April. 11, 2021 nutrients. The first wide-ranging explanation on the population parameters Online: June 18, 2021 specifically; length-frequency distribution (LFD), length-weight relationships _______________ (LWRs), length-length relationship (LLR), form factor (a3.0), condition factors (allometric, K ; Fulton’s, K ; relative, K ; relative weight, W ), size at first Keywords: A F R R sexual maturity (L ) and natural mortality (M ) of T. lalius were estimated. 768 Population parameter, m w specimens were collected over one calendar year (March 2019 to February Beel Dakatia, 2020) from a wetland ecosystem named Beel Dakatia, Khulna, southwestern Trichogaster lalius, Bangladesh through various traditional fishing gears.