Age and growth of Barbus grypus in the Dalaki and Helle Rivers of Boushehr Province
Subject Areas : New Technologies in Aquaculture Development
Keywords: age, growth, Barbus grypus, Dalaki, Keywords: Helle,
Abstract :
Abstract This study was carried out to determine age and growth of large scaled barb (Barbus grypus) in Helle and Dalaki Rivers of Boushehr Province. In this research, 2494 fish were caught during 14 months sampling period. The most abundant length class was 200-300 mm. The most abundant ages were 2 and 3 years old. The most aged of fish was 8 years old with 765 mm length. Von bertalanfy growth equation showed that fishes in upstream stations have greater L∞ than down stream station. L∞ in male and female upstream fishes was 1245 and 1189, respectively. L∞ in male and female downstream fishes was 1120 and 1165, respectively. Condition factor showed that female fishes have better condition than male fishes and fishes in 6 and 7 stations have greater condition factor.
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