Age, Growth and Length-Weight Relationship of Tarek (Alburnus tarichi Güldenstädt, 1814) from Lake Van, Türkiye

This study was carried out to determine the some population parameters of tarek (Alburnus tarichi Güldenstädt, 1814) in Lake Van between October 3, 2020 and October 13, 2020. A total of 695 specimens were caught by using European Standard (EN 14757) gillnets. The fish sample was consisted of 51.2% female and 48.8% male individuals, so ratio of ♀:♂ was computed as 1.05:1. The age distribution of sample was found 0-7 range. Average total length of the age classes were calculated as, 7.95, 14.37, 18.92, 21.96, 23.14, 23.97, 24.65, 25.60 cm and average weights were calculated as, 3.38, 22.37, 54.98, 89.07, 105.87, 120.42, 132.02, 154.75 g for from 0 to VII age classes respectively. The length-weight relationship (LWR) of population (for all individulas) was described as W=0.0033TL3.3044. The growth type of the fish was determined as positive allometric (+). Fulton condition factor, L∞, Kbrody, t0, W∞ were estimated as; 0.790, 25.9937 cm, 0.4674 year-1, -0.7713 year and 156.1708 g respectively for the all individuals. Our study contributes to updating the literature on the determination of growth characteristics and age distributions of the population of tarek in the Lake Van.