Diversity and distribution of phytoplankton in an artificial pond

Abstract

The length-weight relationship and condition factor of climbing perch Anabas testudineus from Kuttanad waters of Kerala was calculated to assess the significance of allometric factor and the well being. The study was carried out using fishes belonging to different size categories during January to March 2015. A total of 246 specimens of Anabas testudineus were used for the analysis. The total length of the fishes analysed ranged from 7.7 cm to 18.4 cm with a mean length of 12.73 cm and the total weight ranged from 10.42 g to 117.27 g with an average weight of 46.21 g. The length – weight relationship calculated for the total fishes was W = 0.0002980 L 2.8452 . The slope value was lower than the critical isometric value of 3 exhibiting negative allometric growth in smaller length groups whereas 'b' exhibits positive allometric growth in largest forms. The condition factor of Anabas testudineus observed ranges from 1.45 to 3.08 with a mean value of 2.06 implicating that the fishes are in a good condition in the habitat.