Purba Medinipur- 721152 ,West Bengal, India. | *e-mail – firstname.lastname@example.org
Subarnarekha is one of the most important river in India and it originates from Nagri villege near Ranchi district in the state of Jharkhand it traverses through the three states in India ( Jharkhand, West Bengal and Orissa), and finally join into the bay of Bengal near kirtania port of Baleswar district in the state of Orissa. The present investigation deals with the freshwater fish diversity, distribution and conservation status with respect to physico-chemical parameter of the water habitat during study period ( February 2018 -August 2019) in the middle part of Subarnarekha river at Ghatsila.
Total 58 fish species belonging to 10 order, 21 families and 37 genera have been recorded from two sampling station during the study period. Study revealed that the family cyprinidae was the most dominant group contributing 45% of the total fish species followed by other families. The Shannon – Weiner diversity index and Simpson Dominance index of two different sampling station was indicated that，the highest fish diversity index were recorded at station -II (Raatmohna Riverside) is 3.774 followed by station -1 ( Galudih) is3.770. Out of 58 species, 47 species under least concern (LC), 5 species under near threatened (NT), only 3 species that was under Vulnerable(VU), 3 species under Data Deficient (DD) but there is no species which belonging to under endanger category.
The study also revealed that the river is gradually threatened by discharging of industrial (Hindustan Copper Limited) and domestic effluents, pollution (plastic, agriculture etc.), climate change and several anthropogenic activity. Meanwhile, it is suggested that the administration and local people need to be a legal action urgently for save the fish diversity in near future