Anabas testudineus collected from Taiwabpur Beel, Board Bazaar, Ashulia
industrial area, a branch of Turag River (23°52΄N - 90°24΄E) during April-
October, 2012. The water quality parameters of the sampling site were pH
ranged of water was 6.14-8.79, hardness was high (300-1816 mg/l), turbidity
level was 12.31-97.2 NTU, DO was quite low (0.76-7.1 mg/l), BOD was 0.7-4.65
mg/l and CO2 was 0-15.5 mg/l. The average width and depth of the river were
400m and 10m respectively.