Length weight relationship, condition factor and length at first maturity of Indian halibut Psettodes erumei in the Persian Gulf

Length weight relationship, condition factor and length at first maturity of Indian halibut Psettodes erumei were investigated in the Persian Gulf by monthly sampling of 30 fish from March to February 2012. Mean value of total length and weight were 38.68 ± 9.39 cm and 986.92 ± 756.79 gr, respectively. Maximum and minimum values of total length were in August (44.43 ± 6.37 cm) and March (23.27 ± 2.32 cm), respectively. Maximum and minimum values of body weight were in January (1540.73 ± 1358.69 g) and March (134.52 ± 40.13 g), respectively. Analysis of length frequency distribution showed that the most frequent length category was the category of 39-42 cm with 56 fish that is equivalent to 17.89% of total samples. 52.4% of caught fish had a total length less or equal to 39 cm. Total length-weight relation in Psettodes erumei was calculated as W=0.005TL3.284 with R2= 0.973. Regarding significant difference between the estimated b and the number 3 with 0.95% confidence, the growth type of this species was determined to be positive allometric in the Persian Gulf. Condition factor was calculated to be 1.57 in Psettodes erumei in the Persian Gulf waters. Condition factor has increased from March to July and then decreased to December. Length at first maturity was estimated to be 39.3 cm of total length in Psettodes erumei.