Jash Hang Limbu - Academia.edu (original) (raw)

Papers by Jash Hang Limbu

Research paper thumbnail of Habitat Occupancy of the Critically Endangered Chinese Pangolin (Manis pentadactyla) under Human Disturbance in an Urban Environment: Implications for Conservation

Research paper thumbnail of First record of the non-native vermiculated sailfin catfish Pterygoplichthys disjunctivus (Weber, 1991) from Lohandra River, Eastern Nepal

BioInvasions Records, 2024

Research paper thumbnail of New Distribution Record and Habitat Characteristics of Stinging Catfish (Heteropneustes nani Hossain, Sarker, Sharifuzzaman and Chowdhury, 2013) from Nepal

Punjab University journal of zoology, 2024

Research paper thumbnail of First record of Garra kempi Hora, 1921 (Cypriniformes: Cyprinidae) from Lohandra River of Nepal

Journal of threatened taxa, Jun 26, 2024

Research paper thumbnail of Length-Weight Relationship of Fishes in Some Rivers of Morang, Nepal

Research paper thumbnail of Evaluating the influence of environmental variables on fish abundance and distribution in the Singhiya River of Morang District, eastern Nepal

Journal of Threatened Taxa

Monitoring the impact of fishing pressure on the Singhiya River is critical for resource developm... more Monitoring the impact of fishing pressure on the Singhiya River is critical for resource development and sustainability, and the present situation is alarming and causing critical concern among the public. This study aimed to identify fish community trends over time and space in the river, and to investigate the impact of environmental variables on fish abundance and dispersion. Monthly fish sampling was performed from October 2020 to September 2021 from the 5th to 10th of each month. We used three cast nets of various mesh sizes (0.5, 2, & 4 cm) and monofilament gill nets with mesh sizes of 6, 8, & 10 cm. A total of 7,593 fish were collected, representing 61 species from seven orders, 20 families, and 37 genera. Similarity percentage (SIMPER) analysis revealed 78.8% similarity among six stations, with the primary contributing species: Puntius chola (28.2%), Puntius sophore (13.5%), Pethia ticto (5.33%), Chagunius chagunio (3.76%), Barbonymus gonionotus (3.69%), Puntius terio (3.46%...

Research paper thumbnail of Fecundity of Glyptothorax telchitta (Hamilton, 1822) from Tamor River, Nepal

Our Nature

The present study assesses the fecundity of Glyptothorax telchitta, a hill stream fish from the T... more The present study assesses the fecundity of Glyptothorax telchitta, a hill stream fish from the Tamor River, Nepal. A total of 60 specimens were collected from the Tamor River, with the help of local fishermen between March 2019 and February 2020. The absolute fecundity ranged from 3385 to 14298 eggs with the mean absolute fecundity of 9448.469 ± 607.783. The fish was found to be a medium fecund fish. Relative fecundity ranged from 151 to 529 eggs per gram body weight with mean relative fecundity of 371.38 ± 15.72. Fecundity showed significant positive correlations with ovary weight (r = 0.858) total length (r = 0.844) and total weight (r = 0.825). This indicated that fecundity dependent is mostly on ovary weight. Gonado-somatic index scored the peak values during March (15.15%) and May (15.01%), indicating the fish’s spawning period during the spring season. Egg sizes varied from 0.382 mm to 1.149 mm. The appearance of various sizes of eggs in a single ovary indicated that the fish...

Research paper thumbnail of First Record of Catfish Amblyceps waikhomi (Darshan, Kachari, Dutta, Ganguly, and Das 2016) (Siluriformes: Amblycipitidae) for Nepal from the Singhiya River of Morang District, Eastern Nepal

International Journal of Zoology

In 2016, Amblyceps waikhomi from the Brahmaputra drainage of Arunachal Pradesh, India, was descri... more In 2016, Amblyceps waikhomi from the Brahmaputra drainage of Arunachal Pradesh, India, was described. Based on morphometric and meristic characteristics, we report the first-ever sighting of A. waikhomi from the Singhiya River in Morang district. A deeper body depth at the anus sets the A. waikhomi apart from its congeners. The river systems of Nepal are home to two Amblycipitidae species, including this one.

Research paper thumbnail of Fish community structure along altitudinal gradients with relation to environmental variables in Ratuwa River of Eastern, Nepal

Our Nature, 2021

Studies on fish community structure along altitudinal gradients of rivers are lacking in Nepal. T... more Studies on fish community structure along altitudinal gradients of rivers are lacking in Nepal. This study was carried out to gauge the fish diversity and composition along elevational gradient in Ratuwa River. The altitudinal gradient varies between 70 m to 1300 m. Fish samples were collected based on habitat representativeness from April (spring) 10-18, July (summer) 10-18, October (autumn) 10-18, 2020 and January (winter) 10-18, 2021. A total of 3447 specimens representing 4 orders, 14 families and 36 species were identified. Both fish diversity and abundance of studied ichthyofauna vary with altitudinal gradient. The present study affirmed that fish species of Opsarius bendelisis, Schistura multifasciatus, Garra annandalei, Brachydanio rerio, Aspidoparia morar, and Schistura scaturigina are the major contributory species (>1%) for both space and time spectrums. Fish community structure testing for both to space and time showed significant difference in spatial spectrum (R=0.7...

Research paper thumbnail of Fecundity and Gonadosomatic Index of Sucker Throat Catfish, Pseudecheneis sulcata (McClelland, 1842) from the Snow-fed Tamor River in Eastern Nepal

Borneo Journal of Resource Science and Technology, 2021

In comparison to other nations, the Nepalese information on the reproductive biology of hill-stre... more In comparison to other nations, the Nepalese information on the reproductive biology of hill-stream fish is limited. So, the purpose of the present study was to provide information related to reproductive biology of a hill-stream sucker throat catfish Pseudecheneis sulcata from the snow-fed Tamor River, Nepal. The study was carried out from June 2018 to May 2019. A total of 57 female fish was collected. The fecundity of 22 females was assessed, while the gonadosomatic index was determined using all the collected samples. The absolute fecundity ranged from 2,316 to 7,597 eggs, with an average of 3,660 ± 210. This range of absolute fecundity indicates that Pseudecheneis sulcata is a moderately fecund fish when compared to certain low fecund species and some exceptionally fecund fish with tens of thousands of eggs. Relative fecundity ranged from 65.47 to 129.11 with a mean of 88.98 ± 4.35. The present study demonstrated that absolute fecundity was moderately correlated with total leng...

Research paper thumbnail of Ichthyofaunal diversity with relation to environmental variables in the snow-fed Tamor River of eastern Nepal

Journal of Threatened Taxa, 2021

Tamor River in eastern Nepal supports diverse hill stream fishes. From winter, spring, summer, an... more Tamor River in eastern Nepal supports diverse hill stream fishes. From winter, spring, summer, and autumn of 2020, we investigated the ichthyofaunal diversity with environmental variables in the snow-fed Tamor River covering four seasons (winter, spring, summer, and autumn) and field surveys were carried out in January, April, July, and October 2020. We used two cast nets of different sizes, one with a mesh size of 2 cm, 6 m diameter and 6 kg weight and another having 0.5 cm, 3 m diameter and 2 kg weight. In addition, monofilament gill nets with mesh sizes of 6, 8, and 10 were used for fish sampling. A total of 6,373 fish individuals representing 28 species belonging to three orders, seven families, and 16 genera were recorded. One-way permutational multivariate analysis of variance (perMANOVA) on the Non-metric Multidimensional Scaling (NMDS) showed no significant (P >0.05) difference between winter, spring, and autumn season but summer season showed significant (P <0.05) dif...

Research paper thumbnail of Relationships between environmental conditions and fish assemblages in the Lohore River of Dailekh, Western Nepal

Our Nature, 2021

The Lohore River is one of the important riverine ecosystems of Dailekh which support diverse aqu... more The Lohore River is one of the important riverine ecosystems of Dailekh which support diverse aquatic communities. The present study was carried out to assess the fish diversity status with relation to environmental conditions in both to space and time. The survey was conducted at three different sampling stations in three different seasons. For the fish sampling, two cast nets of different mesh sizes were used, one having large mesh size of 2 cm, 6 m diameter and 6 kg weight and another having mesh size of 0.5 cm, 3 m diameter and 2 kg weight. Moreover, drag net and gill net were also used to collect the fish samples. A total of 11 fish species belonging to 2 orders, 3 families and 7 genera. Results from the similarity percentage analysis (SIMPER) suggested that fish species of Puntius gelius, Schizothorax plagiostomus, Tor chelynoides and Schistura sovana were major contributing species each contribute more than 9%. An analysis of similarity (ANOSIM) pointed that fish community st...

Research paper thumbnail of Correlation of fish assemblages with habitat and environmental variables in the Phewa Khola Stream of Mangsebung Rural Municipality, Ilam, Nepal

Research paper thumbnail of Identification of Ecto-parasites in silver carp (Hypophthalmichthys molitrix) and common carp (Cyprinus carpio) at fishery development Center Bhairahawa, Rupandehi, Nepal

This study was carried out at Fishery Development Center, Bhairahawa, Nepal between pre-monsoon a... more This study was carried out at Fishery Development Center, Bhairahawa, Nepal between pre-monsoon and post monsoon. Altogether 60 live host fishes (30 pre and 30 post monsoon) were examined. Total 60 fish samples were divided in 3 groups, 20 were small (<18 cm), 20 were medium (18-28 cm) and 20 were larger (>28 cm) in size. During study period total 321 parasites were recorded from 28 fish samples. Among them two protozoans (Trichodina, Ichthyophthirius multifiliis), two monogeneans (Dactylogyrus, and Gyrodactylus) and two crustaceans (Argulus and Lernaea) were collected from skin, mucus, fins and gills. Prevalence, intensity and abundance of parasites were analyzed. Silver Carp were more susceptible to infection then Common Carp. The number of Dactylogyrus ssp. Was highest (57%) and Gyrodactylus spp. Was lowest (0.6%). Prevalence, intensity and abundance of fish parasites were found to be related to different length group of the host. The high prevalence (75%) was recorded from...

Research paper thumbnail of Environmental Variables and Fisheries Diversity of the Nuwa River, Panchthar, Nepal

Scientific World, 2020

The fish samples were collected from October 2017 to June 2018 in Nuwa River from four sampling s... more The fish samples were collected from October 2017 to June 2018 in Nuwa River from four sampling stations by using cast net, bamboo fish trap and mosquito nets. Environmental parameters: water temperature, dissolved Oxygen (DO), CO2, pH, hardness and water velocity were analyzed during each field visit. Eight fish species were collected in present study. The most copious species were Schizothorax plagiostomus, and Schistura multifaciatus. Shannon-Weiner fish diversity index and species richness recorded were highest at station I and lowest at station III, similarly, evenness index was highest at station I and lowest at station III. The water volume, water depth, and the availability of substrates were found to be major influential factors for the weight and length of the fishes. The redundancy analysis (RDA) portrayed that environmental variables like dissolved oxygen, free- carbon dioxide, and pH were found to be pivotal variables to shape the fish assemblage structure of Nuwa River...

Research paper thumbnail of A brief report on ichthyofaunal diversity of Dewmai khola of Ilam district, Nepal

Journal of Natural History Museum, 2018

Fish diversity of Nepal has been poorly studied or understood relative to other fauna, so a lot o... more Fish diversity of Nepal has been poorly studied or understood relative to other fauna, so a lot of study is still required to have a better fish diversity profile. We investigated ichthyofaunal diversity on one of the unexplored rivers, Dewmai Khola which lies in mid-hill region of Ilam district in eastern Nepal. Fishes were collected from three sampling sites in day time by using a cast net with the help of local fisherman. The field visits were performed from December2015 to September 2016. A total of 16 fish species belonging to 3 orders, 6 families and 11genera have been recorded. The Cypriniformes was the dominant order represented by 3families: 1) Cyprinidae with 7 species (Cirrhinus mrigala, Barilius barila, B. bendelisis, Bengalaelanga, Danio aequipinnatus, Schizothoraichthys labiatus and Garra gotyla), 2) Cobitidae with5 species (Schistura multifasciatus, S. horai, S. scaturigina, S. savona and S. rupecula) and3) Psilorhynchidae with a single species Psilorhynchus pseudeche...

Research paper thumbnail of Non-consolidated Flows, Sector S2 - Rest of the World: Korea

Research paper thumbnail of Spatio-temporal variation of fish assemblages in Babai River of Dang district, Province No. 5, Nepal

Our Nature, 2019

Spatial and temporal variation of fish assemblages were investigated seasonally from October 2018... more Spatial and temporal variation of fish assemblages were investigated seasonally from October 2018 to May 2019. Fish assemblages were agglomerated with environmental variables both to spatial and temporal scales. Water temperature, dissolved Oygen, free carbon-dioxide, pH and water velocity of water of each site were measured. Based on analysis of similarities (ANOSIM), fish assemblages were significantly different in spatial variation but not in temporal variation. A total of 1,024 individuals belonging to 5 orders, 9 families and 15 genera and 24 species were collected. The dominated species were Puntius sophore, followed by P. terio, P. ticto and Barilius bendelisis. The Redundancy Analysis (RDA) vindicated that environmental variables of water temperature, pH, water velocity and free carbon-dioxide were found to be contributed variables to shape the fish assemblage structure of Babai River. The cluster analysis delineated that similarity between fish species decreases as the dist...

Research paper thumbnail of Fish diversity of Damak and lower Terai region of Ratuwa River of Jhapa district, Nepal

Fish samples were collected from twenty five sampling stations of Damak and lower Terai region of... more Fish samples were collected from twenty five sampling stations of Damak and lower Terai region of Ratuwa River from August, 2018 to October, 2018 by using Cast net, Hapa net, and mosquito nets. We collected 27 fish species of Cypriniformes in two families: Cyprinidae with 12 species and Cobitidae with three species. While order Anguilliformes (Angullidae), Clupeiformes (Clupeidae), and Synbranchiformes (Synbranchidae) got the single family with single fish species. Siluriformes with three families: Schelbeidae with single species, Pangasidae with single species and Claridae with two species. Similarly, Order Perciformes with two families: Belontidae with three species and Channidae with two species were recorded. Some fish of Damak, and Ratuwa River has been plummeting. It is due to over population, over fishing practices, illegal electro-fishing, use of stupefied poison herbs, and use of fry nets. There might be some other reasons for plummeting fish species. This is due to the lac...

Research paper thumbnail of Fish Assemblage Structure and Environmental Correlates in Nepal’s West Rapti River, Banke

The spatial and temporal variations of fish assemblages in rivers and streams of Nepal are poorly... more The spatial and temporal variations of fish assemblages in rivers and streams of Nepal are poorly understood. So, the present study aimed to explore the spatial and temporal variations of fish assemblage structure in Nepal’s West Rapti River. The data were collected during autumn, winter and spring seasons, from October 2018 to April 2019. Fish samples were collected using cast net of 12 mm mesh size. A total of 28 species belonging to 7 orders, 10 families and 19 genera were recorded during the study. The analysis of similarity (ANOSIM) showed no significant difference among the stations and seasons. Based on cluster analysis, two major clusters were observed. The similarity percentage (SIMPER) analysis delineated that Cabdio morar (C14, 13.63%), Barilius bendelensis (C11, 10.32%), Gogangra viridescens (C22, 7.85%), Salmostoma phulo (C17, 7.74%), Labeo gonius (C5, 7.53%), Gagata cenia (C23, 6.45%), Garra gotyla (C6, 5.87%) and Labeo dyocelius (C2, 5.62%) were the most contributing ...

Research paper thumbnail of Habitat Occupancy of the Critically Endangered Chinese Pangolin (Manis pentadactyla) under Human Disturbance in an Urban Environment: Implications for Conservation

Research paper thumbnail of First record of the non-native vermiculated sailfin catfish Pterygoplichthys disjunctivus (Weber, 1991) from Lohandra River, Eastern Nepal

BioInvasions Records, 2024

Research paper thumbnail of New Distribution Record and Habitat Characteristics of Stinging Catfish (Heteropneustes nani Hossain, Sarker, Sharifuzzaman and Chowdhury, 2013) from Nepal

Punjab University journal of zoology, 2024

Research paper thumbnail of First record of Garra kempi Hora, 1921 (Cypriniformes: Cyprinidae) from Lohandra River of Nepal

Journal of threatened taxa, Jun 26, 2024

Research paper thumbnail of Length-Weight Relationship of Fishes in Some Rivers of Morang, Nepal

Research paper thumbnail of Evaluating the influence of environmental variables on fish abundance and distribution in the Singhiya River of Morang District, eastern Nepal

Journal of Threatened Taxa

Monitoring the impact of fishing pressure on the Singhiya River is critical for resource developm... more Monitoring the impact of fishing pressure on the Singhiya River is critical for resource development and sustainability, and the present situation is alarming and causing critical concern among the public. This study aimed to identify fish community trends over time and space in the river, and to investigate the impact of environmental variables on fish abundance and dispersion. Monthly fish sampling was performed from October 2020 to September 2021 from the 5th to 10th of each month. We used three cast nets of various mesh sizes (0.5, 2, & 4 cm) and monofilament gill nets with mesh sizes of 6, 8, & 10 cm. A total of 7,593 fish were collected, representing 61 species from seven orders, 20 families, and 37 genera. Similarity percentage (SIMPER) analysis revealed 78.8% similarity among six stations, with the primary contributing species: Puntius chola (28.2%), Puntius sophore (13.5%), Pethia ticto (5.33%), Chagunius chagunio (3.76%), Barbonymus gonionotus (3.69%), Puntius terio (3.46%...

Research paper thumbnail of Fecundity of Glyptothorax telchitta (Hamilton, 1822) from Tamor River, Nepal

Our Nature

The present study assesses the fecundity of Glyptothorax telchitta, a hill stream fish from the T... more The present study assesses the fecundity of Glyptothorax telchitta, a hill stream fish from the Tamor River, Nepal. A total of 60 specimens were collected from the Tamor River, with the help of local fishermen between March 2019 and February 2020. The absolute fecundity ranged from 3385 to 14298 eggs with the mean absolute fecundity of 9448.469 ± 607.783. The fish was found to be a medium fecund fish. Relative fecundity ranged from 151 to 529 eggs per gram body weight with mean relative fecundity of 371.38 ± 15.72. Fecundity showed significant positive correlations with ovary weight (r = 0.858) total length (r = 0.844) and total weight (r = 0.825). This indicated that fecundity dependent is mostly on ovary weight. Gonado-somatic index scored the peak values during March (15.15%) and May (15.01%), indicating the fish’s spawning period during the spring season. Egg sizes varied from 0.382 mm to 1.149 mm. The appearance of various sizes of eggs in a single ovary indicated that the fish...

Research paper thumbnail of First Record of Catfish Amblyceps waikhomi (Darshan, Kachari, Dutta, Ganguly, and Das 2016) (Siluriformes: Amblycipitidae) for Nepal from the Singhiya River of Morang District, Eastern Nepal

International Journal of Zoology

In 2016, Amblyceps waikhomi from the Brahmaputra drainage of Arunachal Pradesh, India, was descri... more In 2016, Amblyceps waikhomi from the Brahmaputra drainage of Arunachal Pradesh, India, was described. Based on morphometric and meristic characteristics, we report the first-ever sighting of A. waikhomi from the Singhiya River in Morang district. A deeper body depth at the anus sets the A. waikhomi apart from its congeners. The river systems of Nepal are home to two Amblycipitidae species, including this one.

Research paper thumbnail of Fish community structure along altitudinal gradients with relation to environmental variables in Ratuwa River of Eastern, Nepal

Our Nature, 2021

Studies on fish community structure along altitudinal gradients of rivers are lacking in Nepal. T... more Studies on fish community structure along altitudinal gradients of rivers are lacking in Nepal. This study was carried out to gauge the fish diversity and composition along elevational gradient in Ratuwa River. The altitudinal gradient varies between 70 m to 1300 m. Fish samples were collected based on habitat representativeness from April (spring) 10-18, July (summer) 10-18, October (autumn) 10-18, 2020 and January (winter) 10-18, 2021. A total of 3447 specimens representing 4 orders, 14 families and 36 species were identified. Both fish diversity and abundance of studied ichthyofauna vary with altitudinal gradient. The present study affirmed that fish species of Opsarius bendelisis, Schistura multifasciatus, Garra annandalei, Brachydanio rerio, Aspidoparia morar, and Schistura scaturigina are the major contributory species (>1%) for both space and time spectrums. Fish community structure testing for both to space and time showed significant difference in spatial spectrum (R=0.7...

Research paper thumbnail of Fecundity and Gonadosomatic Index of Sucker Throat Catfish, Pseudecheneis sulcata (McClelland, 1842) from the Snow-fed Tamor River in Eastern Nepal

Borneo Journal of Resource Science and Technology, 2021

In comparison to other nations, the Nepalese information on the reproductive biology of hill-stre... more In comparison to other nations, the Nepalese information on the reproductive biology of hill-stream fish is limited. So, the purpose of the present study was to provide information related to reproductive biology of a hill-stream sucker throat catfish Pseudecheneis sulcata from the snow-fed Tamor River, Nepal. The study was carried out from June 2018 to May 2019. A total of 57 female fish was collected. The fecundity of 22 females was assessed, while the gonadosomatic index was determined using all the collected samples. The absolute fecundity ranged from 2,316 to 7,597 eggs, with an average of 3,660 ± 210. This range of absolute fecundity indicates that Pseudecheneis sulcata is a moderately fecund fish when compared to certain low fecund species and some exceptionally fecund fish with tens of thousands of eggs. Relative fecundity ranged from 65.47 to 129.11 with a mean of 88.98 ± 4.35. The present study demonstrated that absolute fecundity was moderately correlated with total leng...

Research paper thumbnail of Ichthyofaunal diversity with relation to environmental variables in the snow-fed Tamor River of eastern Nepal

Journal of Threatened Taxa, 2021

Tamor River in eastern Nepal supports diverse hill stream fishes. From winter, spring, summer, an... more Tamor River in eastern Nepal supports diverse hill stream fishes. From winter, spring, summer, and autumn of 2020, we investigated the ichthyofaunal diversity with environmental variables in the snow-fed Tamor River covering four seasons (winter, spring, summer, and autumn) and field surveys were carried out in January, April, July, and October 2020. We used two cast nets of different sizes, one with a mesh size of 2 cm, 6 m diameter and 6 kg weight and another having 0.5 cm, 3 m diameter and 2 kg weight. In addition, monofilament gill nets with mesh sizes of 6, 8, and 10 were used for fish sampling. A total of 6,373 fish individuals representing 28 species belonging to three orders, seven families, and 16 genera were recorded. One-way permutational multivariate analysis of variance (perMANOVA) on the Non-metric Multidimensional Scaling (NMDS) showed no significant (P >0.05) difference between winter, spring, and autumn season but summer season showed significant (P <0.05) dif...

Research paper thumbnail of Relationships between environmental conditions and fish assemblages in the Lohore River of Dailekh, Western Nepal

Our Nature, 2021

The Lohore River is one of the important riverine ecosystems of Dailekh which support diverse aqu... more The Lohore River is one of the important riverine ecosystems of Dailekh which support diverse aquatic communities. The present study was carried out to assess the fish diversity status with relation to environmental conditions in both to space and time. The survey was conducted at three different sampling stations in three different seasons. For the fish sampling, two cast nets of different mesh sizes were used, one having large mesh size of 2 cm, 6 m diameter and 6 kg weight and another having mesh size of 0.5 cm, 3 m diameter and 2 kg weight. Moreover, drag net and gill net were also used to collect the fish samples. A total of 11 fish species belonging to 2 orders, 3 families and 7 genera. Results from the similarity percentage analysis (SIMPER) suggested that fish species of Puntius gelius, Schizothorax plagiostomus, Tor chelynoides and Schistura sovana were major contributing species each contribute more than 9%. An analysis of similarity (ANOSIM) pointed that fish community st...

Research paper thumbnail of Correlation of fish assemblages with habitat and environmental variables in the Phewa Khola Stream of Mangsebung Rural Municipality, Ilam, Nepal

Research paper thumbnail of Identification of Ecto-parasites in silver carp (Hypophthalmichthys molitrix) and common carp (Cyprinus carpio) at fishery development Center Bhairahawa, Rupandehi, Nepal

This study was carried out at Fishery Development Center, Bhairahawa, Nepal between pre-monsoon a... more This study was carried out at Fishery Development Center, Bhairahawa, Nepal between pre-monsoon and post monsoon. Altogether 60 live host fishes (30 pre and 30 post monsoon) were examined. Total 60 fish samples were divided in 3 groups, 20 were small (<18 cm), 20 were medium (18-28 cm) and 20 were larger (>28 cm) in size. During study period total 321 parasites were recorded from 28 fish samples. Among them two protozoans (Trichodina, Ichthyophthirius multifiliis), two monogeneans (Dactylogyrus, and Gyrodactylus) and two crustaceans (Argulus and Lernaea) were collected from skin, mucus, fins and gills. Prevalence, intensity and abundance of parasites were analyzed. Silver Carp were more susceptible to infection then Common Carp. The number of Dactylogyrus ssp. Was highest (57%) and Gyrodactylus spp. Was lowest (0.6%). Prevalence, intensity and abundance of fish parasites were found to be related to different length group of the host. The high prevalence (75%) was recorded from...

Research paper thumbnail of Environmental Variables and Fisheries Diversity of the Nuwa River, Panchthar, Nepal

Scientific World, 2020

The fish samples were collected from October 2017 to June 2018 in Nuwa River from four sampling s... more The fish samples were collected from October 2017 to June 2018 in Nuwa River from four sampling stations by using cast net, bamboo fish trap and mosquito nets. Environmental parameters: water temperature, dissolved Oxygen (DO), CO2, pH, hardness and water velocity were analyzed during each field visit. Eight fish species were collected in present study. The most copious species were Schizothorax plagiostomus, and Schistura multifaciatus. Shannon-Weiner fish diversity index and species richness recorded were highest at station I and lowest at station III, similarly, evenness index was highest at station I and lowest at station III. The water volume, water depth, and the availability of substrates were found to be major influential factors for the weight and length of the fishes. The redundancy analysis (RDA) portrayed that environmental variables like dissolved oxygen, free- carbon dioxide, and pH were found to be pivotal variables to shape the fish assemblage structure of Nuwa River...

Research paper thumbnail of A brief report on ichthyofaunal diversity of Dewmai khola of Ilam district, Nepal

Journal of Natural History Museum, 2018

Fish diversity of Nepal has been poorly studied or understood relative to other fauna, so a lot o... more Fish diversity of Nepal has been poorly studied or understood relative to other fauna, so a lot of study is still required to have a better fish diversity profile. We investigated ichthyofaunal diversity on one of the unexplored rivers, Dewmai Khola which lies in mid-hill region of Ilam district in eastern Nepal. Fishes were collected from three sampling sites in day time by using a cast net with the help of local fisherman. The field visits were performed from December2015 to September 2016. A total of 16 fish species belonging to 3 orders, 6 families and 11genera have been recorded. The Cypriniformes was the dominant order represented by 3families: 1) Cyprinidae with 7 species (Cirrhinus mrigala, Barilius barila, B. bendelisis, Bengalaelanga, Danio aequipinnatus, Schizothoraichthys labiatus and Garra gotyla), 2) Cobitidae with5 species (Schistura multifasciatus, S. horai, S. scaturigina, S. savona and S. rupecula) and3) Psilorhynchidae with a single species Psilorhynchus pseudeche...

Research paper thumbnail of Non-consolidated Flows, Sector S2 - Rest of the World: Korea

Research paper thumbnail of Spatio-temporal variation of fish assemblages in Babai River of Dang district, Province No. 5, Nepal

Our Nature, 2019

Spatial and temporal variation of fish assemblages were investigated seasonally from October 2018... more Spatial and temporal variation of fish assemblages were investigated seasonally from October 2018 to May 2019. Fish assemblages were agglomerated with environmental variables both to spatial and temporal scales. Water temperature, dissolved Oygen, free carbon-dioxide, pH and water velocity of water of each site were measured. Based on analysis of similarities (ANOSIM), fish assemblages were significantly different in spatial variation but not in temporal variation. A total of 1,024 individuals belonging to 5 orders, 9 families and 15 genera and 24 species were collected. The dominated species were Puntius sophore, followed by P. terio, P. ticto and Barilius bendelisis. The Redundancy Analysis (RDA) vindicated that environmental variables of water temperature, pH, water velocity and free carbon-dioxide were found to be contributed variables to shape the fish assemblage structure of Babai River. The cluster analysis delineated that similarity between fish species decreases as the dist...

Research paper thumbnail of Fish diversity of Damak and lower Terai region of Ratuwa River of Jhapa district, Nepal

Fish samples were collected from twenty five sampling stations of Damak and lower Terai region of... more Fish samples were collected from twenty five sampling stations of Damak and lower Terai region of Ratuwa River from August, 2018 to October, 2018 by using Cast net, Hapa net, and mosquito nets. We collected 27 fish species of Cypriniformes in two families: Cyprinidae with 12 species and Cobitidae with three species. While order Anguilliformes (Angullidae), Clupeiformes (Clupeidae), and Synbranchiformes (Synbranchidae) got the single family with single fish species. Siluriformes with three families: Schelbeidae with single species, Pangasidae with single species and Claridae with two species. Similarly, Order Perciformes with two families: Belontidae with three species and Channidae with two species were recorded. Some fish of Damak, and Ratuwa River has been plummeting. It is due to over population, over fishing practices, illegal electro-fishing, use of stupefied poison herbs, and use of fry nets. There might be some other reasons for plummeting fish species. This is due to the lac...

Research paper thumbnail of Fish Assemblage Structure and Environmental Correlates in Nepal’s West Rapti River, Banke

The spatial and temporal variations of fish assemblages in rivers and streams of Nepal are poorly... more The spatial and temporal variations of fish assemblages in rivers and streams of Nepal are poorly understood. So, the present study aimed to explore the spatial and temporal variations of fish assemblage structure in Nepal’s West Rapti River. The data were collected during autumn, winter and spring seasons, from October 2018 to April 2019. Fish samples were collected using cast net of 12 mm mesh size. A total of 28 species belonging to 7 orders, 10 families and 19 genera were recorded during the study. The analysis of similarity (ANOSIM) showed no significant difference among the stations and seasons. Based on cluster analysis, two major clusters were observed. The similarity percentage (SIMPER) analysis delineated that Cabdio morar (C14, 13.63%), Barilius bendelensis (C11, 10.32%), Gogangra viridescens (C22, 7.85%), Salmostoma phulo (C17, 7.74%), Labeo gonius (C5, 7.53%), Gagata cenia (C23, 6.45%), Garra gotyla (C6, 5.87%) and Labeo dyocelius (C2, 5.62%) were the most contributing ...