Aysha Akhtar Assistant Professor Institute of Marine Sciences and Fisheries Chittagong University, Chittagong-4331, Bangladesh. Contact: Phone (Off): 031-710347 Phone (Res): 031-2850993 E-mail: aysha235@yahoo.com Professional Experience Assistant Professor, Institute of Marine Sciences and Fisheries, Chittagong University, Chittagong4331, Bangladesh. Since August