Publication Title : A STUDY ON THE FISH BIODIVERSITY OF LOHALIA RIVER OF BANGLADESH
Publicationed By : Md. Rabiul Islam Rubel
Publication Publication Date : 2016-02-15 00:00:00
Publication Online Link :
Publication Description :
Lohalia River is one of the largest and important river of southern part of Bangladesh. As it is a coastal river of Bangladesh, It has great fish biodiversity of both fresh water and estuarine species. A study was conducted from July to December 2014 to know the biodiversity of fishes in this river. The study was conducted on the basis of the present fish biodiversity and their status in the biodiversity in terms of vulnerable, endangered and critically endangered. A total of 30 species of fishes were recorded belonging to the 16 orders and 7 families. Rubel et.al. (2013) recorded 43 species of fish and crustaceans in Lohalia River. Majority of the fishes belonged to the family Perciformes (12) followed by Siluriformes (7), Cypriniformes (6) and other families were very rare. The fish species were facing threat to sustain in the biodiversity. Among the total fish biodiversity of Lohalia river, highest species belonged to the order perciformes (40%) followed by Siluiriformes (24%), Cypriniformes (20%), Pleuronectiformes (4%) and Synbranchiformes, Tetraodontiformes, Beloniformes and Clupiformes encountered 3% each in the biodiversity. The fishes were found to belong to 18 families among which almost 20% species belonged to the family cyprinidae followed by channidae (10%), gobbidae (10%), bagridae (10%), Siluridae (7%) and other comprised 3% from each family. Almost 60% species were found to face threat at different degree among which almost 37% of species were found vulnerable, 17% species were endangered and 6% species were critically endangered in the fish biodiversity of Lohalia River. Another 40% species were found not threatened during the study. The negative human intervention and some natural causes were found responsible for the degradation of the fish biodiversity of the Lohalia River.