Assessment of reproductive biology of Garra langlungensis (Teleostei: Cyprinidae) from the Langlung River, Nagaland, India
The stone sucker, Garra langlungensis Ezung, Shaingningam & Pankaj, 2021, is confined to the Langlung River, near Zutovi village in Dimapur district of Nagaland, India. This endemic fish is a common food item among the local people. There is scarce information available on this species. Despite...
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BdFISH
2025-06-01
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| Series: | Journal of Fisheries |
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| author | Sophiya Ezung Pranay Punj Pankaj |
| author_facet | Sophiya Ezung Pranay Punj Pankaj |
| author_sort | Sophiya Ezung |
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The stone sucker, Garra langlungensis Ezung, Shaingningam & Pankaj, 2021, is confined to the Langlung River, near Zutovi village in Dimapur district of Nagaland, India. This endemic fish is a common food item among the local people. There is scarce information available on this species. Despite its rising exploitation, the lack of data could contribute to its decline and potential loss. The present study involved analysis of 213 specimens from the Langlung River, collected monthly over a period of one year, to determine the sex ratio, gonadosomatic Index (GSI), and fecundity. The sex ratio of males to females was 1:0.43 (deviation from the expected 1:1 ratio), showing a male-dominated population. The monthly assessment of GSI indicated that G. langlungensis breed once a year, with maximum GSI values of 8.1 (male) and 11.5 (female) in April and a short breeding season extending from February to May. Fecundity, based on data from 16 mature fish specimens, was the highest (844 eggs) in 77.9 mm TL (0.56 g) and the lowest (319 eggs) in 55.2 mm TL specimen (0.23 g). A significant correlation between fecundity and ovary weight (r = 0.915) was recorded. This study provides insights into the sex ratio, GSI, and fecundity of G. langlungensis, which facilitate the identification of fish stocks in their natural habitats and the development of appropriate conservation measures.
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| format | Article |
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| issn | 2311-729X 2311-3111 |
| language | English |
| publishDate | 2025-06-01 |
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| spelling | doaj-art-2874bd04d8b640b18c72f8f62905eca12025-08-20T02:10:34ZengBdFISHJournal of Fisheries2311-729X2311-31112025-06-0113210.17017/j.fish.979Assessment of reproductive biology of Garra langlungensis (Teleostei: Cyprinidae) from the Langlung River, Nagaland, IndiaSophiya Ezung0Pranay Punj Pankaj1Department of Zoology, Nagaland University, Lumami-798627, Zunheboto, Nagaland, IndiaDepartment of Zoology, Nagaland University, Lumami-798627, Zunheboto, Nagaland, India The stone sucker, Garra langlungensis Ezung, Shaingningam & Pankaj, 2021, is confined to the Langlung River, near Zutovi village in Dimapur district of Nagaland, India. This endemic fish is a common food item among the local people. There is scarce information available on this species. Despite its rising exploitation, the lack of data could contribute to its decline and potential loss. The present study involved analysis of 213 specimens from the Langlung River, collected monthly over a period of one year, to determine the sex ratio, gonadosomatic Index (GSI), and fecundity. The sex ratio of males to females was 1:0.43 (deviation from the expected 1:1 ratio), showing a male-dominated population. The monthly assessment of GSI indicated that G. langlungensis breed once a year, with maximum GSI values of 8.1 (male) and 11.5 (female) in April and a short breeding season extending from February to May. Fecundity, based on data from 16 mature fish specimens, was the highest (844 eggs) in 77.9 mm TL (0.56 g) and the lowest (319 eggs) in 55.2 mm TL specimen (0.23 g). A significant correlation between fecundity and ovary weight (r = 0.915) was recorded. This study provides insights into the sex ratio, GSI, and fecundity of G. langlungensis, which facilitate the identification of fish stocks in their natural habitats and the development of appropriate conservation measures. https://journal.bdfish.org/index.php/fisheries/article/view/979endemic fishfecundityGSIlinear relationshipmale-dominated populationspawning season |
| spellingShingle | Sophiya Ezung Pranay Punj Pankaj Assessment of reproductive biology of Garra langlungensis (Teleostei: Cyprinidae) from the Langlung River, Nagaland, India Journal of Fisheries endemic fish fecundity GSI linear relationship male-dominated population spawning season |
| title | Assessment of reproductive biology of Garra langlungensis (Teleostei: Cyprinidae) from the Langlung River, Nagaland, India |
| title_full | Assessment of reproductive biology of Garra langlungensis (Teleostei: Cyprinidae) from the Langlung River, Nagaland, India |
| title_fullStr | Assessment of reproductive biology of Garra langlungensis (Teleostei: Cyprinidae) from the Langlung River, Nagaland, India |
| title_full_unstemmed | Assessment of reproductive biology of Garra langlungensis (Teleostei: Cyprinidae) from the Langlung River, Nagaland, India |
| title_short | Assessment of reproductive biology of Garra langlungensis (Teleostei: Cyprinidae) from the Langlung River, Nagaland, India |
| title_sort | assessment of reproductive biology of garra langlungensis teleostei cyprinidae from the langlung river nagaland india |
| topic | endemic fish fecundity GSI linear relationship male-dominated population spawning season |
| url | https://journal.bdfish.org/index.php/fisheries/article/view/979 |
| work_keys_str_mv | AT sophiyaezung assessmentofreproductivebiologyofgarralanglungensisteleosteicyprinidaefromthelanglungrivernagalandindia AT pranaypunjpankaj assessmentofreproductivebiologyofgarralanglungensisteleosteicyprinidaefromthelanglungrivernagalandindia |