Population biology and assessment of Deep flounder (Pseudorhombus elevatus ogilby, 1912) in northwest of Persian Gulf (Khuzestan Coastal Waters, Iran)

Length composition data of Deep flounder (Pseudorhombus elevatus) landed between April 2009 to March 2011 in Coastal Waters of Iran ( Persian Gulf), were monthly used to estimate the Population biology and assessment of the stock. The growth parameters of von Bertalanffy equation were as, L?: 42 cm and K: 1 per year and t0: -0.14 year, ?ʹ: 3.24 respectively. The estimated valve of total mortality, natural mortality, fishing mortality and Exploitation ratio were Z: 4.65, M: 1.5, F: 3.15, E 0.68, respectively. Relative yield per recruitment (Yʹ/R):0.031, relative biomass per recruitment, (Bʹ/R):0.11, for Deep flounder stock was calculated. The results in this study showed exploitation ratio Deep flounder stock is over fishing and deceases of exploitation ratio is proposed.