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District map of South Dinajpur, West Bengal. Map shows district blocks, major and minor rivers and adjoining districts of Bangladesh besides, two Beels namely, Danga and Gochina. Fish sample collection stations are marked as filled circles by the side of each major river (Map not drawn to scale)
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A steady decline in fish catch per year through the past decades, and selective decline of certain prized small table fishes in the rivers of the district have not been addressed so far. This study, therefore, aims to estimate the present status of the annual fish catch of South Dinajpur district, West Bengal, with reference to the species composit...
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Citations
... A total of 58 species of fishes from different water bodies of Kalimpong, Duars and Siliguri Terai were reported by Hora and Gupta (1940). Chakraborty and Bhattacharjee studied ichthyofauna diversity in the freshwater river of South Dinajpur District of West Bengal, India and recorded 49 fish species belonging to seventeen families (Chakraborty and Bhattacharjee, 2008). ...
The ichthyofauna diversity of the Kulik river, which is of international importance in both India and Bangladesh, was studied for two consecutive years from November 2019 to October 2021 at Raiganj and Hemtabad block of Uttar Dinajpur district, West Bengal, India. The study was done monthly basis for which five sampling sites were selected in the meandering Kulik river about 75 km in length. From the present investigation, a total of 89 fish species belonging to 9 orders and 27 families were recorded during the whole study period. The order Cypriniformes was found to be dominant (37 species) followed by Siluriformes (20 species), Perciformes (19 species), Synbranchiformes (5 species), Osteoglossiformes (3 species), Beloniformes (2 species), Clupeiformes, Cyprinodontiformes and Tetraodontiformes (1 species each). The protection of the ichthyofauna diversity of Kulik River is essential for fishermen›s long-term livelihood as well as the country's socioeconomic development.
... Sehgal (1999) studied the biodiversity of Eastern and Western Himalayas, and Barat et al. [16] documented the fish diversity of the Indian Himalayan region [16,20]. Similarly, Chakraborty (2008) investigated ichthyofaunal resources of South Dinajpur District and Patra et al. [22] reported ichthyofauna diversity of Karala River in Jalpaiguri, a total of 55 species belonging to 8 orders and 20 families were identified [21,22]. Regular surveys and assessment of fish diversity in the Himalayan region and specifically in the major waterways harboring rich fish diversity is important to appraise the status and have reference values for comparative studies in the future. ...
River Teesta rises from the Eastern Himalayas and known as a transboundary river between India and Bangladesh. In India, the river crosses through two states viz. Sikkim and West Bengal before entering into Bangladesh. The study was undertaken in the 47.6 km stretch, from Triveni to Teesta barrage of the Teesta River. The selected study stretch has two major dams, Teesta Low Dam Project (TLDP)-III and TLDP IV and a barrage Teesta barrage, with a combined reservoir length of 17 and 9 km of combined water deprived downstream of dam/barrage representing altered river stretches. Therefore, allowing 21.6 km free flowing river stretches. The study aimed at assessing the fish diversity, distribution, and abundance in the selected study stretch of the river representing reservoir, water deprived downstream, and free flowing stretches of the river Teesta. Fish samples were collected seasonally from five sites representing free flowing (1 sites), reservoir (2 site), and just downstream of dam/barrage (2 sites) using different gears between May 2018 and October 2019. Total 41 fish species under 6 orders and 9 families were recorded. Cyprinidae represented the maximum (26) number among all the families. Critically endangered (Schistura spiloptera), vulnerable (Cyprinion semiplotum, Schizothorax richardsonii, and Garra arupi), and near threatened (Botia lohachata and Neolissochilus hexagonolepis) fishes were recorded. Migratory fish species, viz. Schizothorax richardsonii (Snow trout) and Neolissochilus hexagonolepis (Chocolate Mahseer) were dominated in the free flowing stretches of the river. The Simpson’s diversity index (D) ranged from 0.3 to 0.8, the Shannon index (H) varied from 0.5 to 2.61, and the evenness index varied from 0.5 to 0.9 across the stations and seasons. Cluster analysis indicated formation of two major groups with 90% dissimilarity and 3 sub-groups with similarity varying from 20 to 50%. All the diversity indices showed that the lowest icthyofaunal diversity was in the water deprived downstream of dam stretch as compared to free flowing and reservoir stretch. The study documented for the first time the icthyofaunal diversity in the different river ecosystems representing reservoir, free flowing, and dam obstructed water deprived downstream stretch of river Teesta and recorded the lowest fish diversity in the water deprived downstream of dam stretch. The study highlights for future studies on ecological flows release from the dams for sustainable fisheries particularly in the downstream of the dam stretch, through proper scientific fish based habitat suitability study.KeywordsTeesta RiverDam alterationFish diversityMigratory fish
... Number of freshwater fishes reported in West Bengal with note on list of collectors, list of collecting stations along with their habitat, locality and geographical co-ordinates are provided in Table 1. The publications describing the freshwater fish fauna of the West Bengal was collected, reviewed and presented in Table 1 [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] , information on fishes discovered newly were collected [24][25][26][27][28][29][30][31] and list of freshwater fish species was extracted in Table 2. ...
... Chakraborty and Bhattacharjee [9] Major rivers, like Atrai, Punarbhaba, Tangan, Jamuna, in minor rivers, like Ichhamoti, and in kharis like, Kalkali, Kashiani and Brahmani. Beels visited were Danga and Gochina in south Dinajpur district 49 ...
In the present communication, an attempt has been made to provide a systematic classification of freshwater fishes of West Bengal along with their local names, environment and conservation status, as far as possible. We recognized 267 species of freshwater fishes (186 primary freshwater species, 81 secondary freshwater species), belonging to 12 orders, 40 families and 123 genera. Thirteen species of exotic fishes have been introduced to freshwater bodies of the state. The top order with diverse species composition was Cypriniformes (117 species, 46 genera and 4 families). The most diverse family was Cyprinidae with 84 species and 35 genera. Freshwater fishes of West Bengal revealed existence of 109 ornamental fishes, 92 food fishes and 66 were ornamental or food fishes. Out of the 267 freshwater fishes, 17.97% are under threatened or near threatened categories. Updated checklist will lead to a better understanding of the freshwater fish diversity of West Bengal for development and conservation planning processes.
... INTRODUCTION [1] [2] [3] [4] [5] [5] [6] [7] [8] [9] [10] [11] [12] ...
... The fish fauna represents mostly the Chinese, Malayan and Indian elements of fishes of the Oriental realm (Hora and Gupta, 1940). The important contributors on North Bengal fresh water fish fauna are Shaw and Shebbeare (1937), Hora (1945Hora ( , 1947, Hora and Gupta (1940), Sen (1992), Jha et al. (2005) and Sarkar and Pal (2008), Chakraborty and Bhattacharjee (2008), Patra (2011). The present study was carried out in the Darjeeling Himalayan hill-stream Relli, a spring-fed, sub-tropical, torrential and relatively undisturbed left hand tributary of the river in order to examine the diversity of loach and catfish, their prospects as ornamental fish and constraints. ...
Nepal has high potential to fish farming but very few works have done on the water quality maintenance including
Baidya fish farm and Itahari Municipality ponds which are located along the industrial corridor. Influence of variations
in physico-chemical parameters on aquatic flora and fauna especially in fishes brought strong stress on fishes and
increases the incidence of diseases leading to high mortality. Due to lack of adequate knowledge about it, productivity
of ponds is very low.
In the present study, maximum and minimum variations and correlation between different physico-chemical parameters - air temperature, water temperature, pH, conductivity, dissolved carbon dioxide, ammonia, nitrate, dissolved oxygen, biological oxygen demand, chloride, total alkalinity, total hardness and phosphate were taken into consideration. The water quality of fish ponds were normal except high fluctuation of chloride 4.0 - 44.37mg/l and ammonia 0.48-18.7mg/l during manuaring period and casual addition of waste like toilet cleaners ,caustic potash etc. Outbreak of epizootic ulcerative syndrome ( EUS) were observed at the periphery of Baidya fish farm due to sudden fall in temperature (more than 50C.) during winter months when polluted cold water from Koshi canal was added. The affected fishes developed several lesions around the body and fin rot. Due to sudden fall in D.O. less than 4mg/l during April and May, 2010 mass mortality of fishes Labeo rohita, Cirrhina mrigala, Hypothalamichthys molitrix, Aristichthys nobilis occurred in Site1(Baidya Fish Farm, Tankisinwari, Morang). When chicken droppings were added in pond, ammonia was raised up to 18.7 mg/l which led to mass mortality of fish (Pangasius) during August in Site1 .Recently in September19, 2011 mass mortality (about 2 quintals) of some species of fishes in Site 1 occurred due to increment of ammonia after addition of toilet wastes in Site 2.
Several microbial fish diseases caused by Aeromonas hydrophila, A. cavia, Flavobacterium columnaris, fungal diseases caused by Aspergillus, Aphanomyces, Achlya were also predominantly appeared in this environmental condition.
INTRODUCTION Small fishes having aesthetic value are known as ornamental fish. The most important characteristic feature of these fishes is their body coloration and body pigmentation. Dey (1996) defined ornamental fish as attractive and colourful fish of peaceful nature that can be kept as pets in confined spaces of an aquarium or a garden pool with the purpose of enjoying their beauty for fun and fancy. The soothing effect of aquariums in helping to relieve some of the pressures of modern urban life have helped, in part, to make ornamental fish keeping a popular pastime and an important commercial activity. Fish keeping is today the world's most popular hobby after photography and ornamental fish are the most popular pets in the world (Singh, 2005). As such, production of ornamental fish for the aquarium hobbyist trade is rapidly increasing. Fishes belong ABSTRACT: Fishes belonging to the families Balitoridae and Cobitidae are "Loaches" and siluroid fishes belonging to order Siluriformes are called "catfishes" in popular parlance. The loaches and catfishes form two important groups having good potential as aquarium fish due to their colouration, bright bands, blotches, shapes, nature, hardiness, compatibility, and small body size for which they can be reared in aquarium. Streams of Darjeeling Himalayan upland form a very rich and dynamic resource of high altitude fisheries, where cold water fishes abound. The present study was carried out in the Darjeeling Himalayan hill-stream Relli, in order to examine the diversity of loach and catfish, their prospects as ornamental fish and constraints in respect to conservation. There are 7 loach species belonging to 5 genera and 3 catfish species under 3 genera. Some species are already popular among the traders and hobbyists both locally and globally by specific trade name. The highly priced native ornamental fish resources especially loaches provide the region an ample scope for foreign exchange earnings through long term planning, conservation and judicious use of the germplasm.
