Length-Weight Relation of Condition Factors of Barb (Barbonymus balleroides Val. 1842) in Serayu River, Central Java

Abstract

The Serayu River, a major river in Central Java Province, crosses five regencies
including Banjarnegara Regency. Barb is one of the fish species, which found in
the Serayu River tends to decrease in population. The aim of The Study are to
examine length-weight relationship and condition factor of barb (Barbonymus
balleroides Val. 1842) in Serayu River. The fish samples were taken from October
2012 to March 2013. Fish samples were caught using nets, gill nets. The samples
were analyzed to find out the length, weights and condition factor. The results
showed That length weights relationshipis expressed by the equation: W = 3E-
05L2.81 and allometric negative, while the female fish W = 8E-06L3.05 and
allometric positive. the condition factor male fish peak season in March and
female fish in October. The need for gear restrictions and arrests during peak
reproductive season in October.