Author: Avijit Lahiri
DOI Link: https://doi.org/10.70798/Bijmrd/04010032
Abstract: The present study had been conducted to document the ichthyofaunal diversity of small indigenous fish species (SIFs) inhabiting the freshwater ecosystems of Malda district, West Bengal, India. Small indigenous fish species are ecologically significant components of freshwater ecosystems and had been recognized as vital sources of nutrition and livelihood for rural populations. Extensive field surveys had been carried out across rivers, ponds, beels, canals, and seasonal water bodies of Malda district during the study period. Standard sampling techniques were employed, and fish specimens were identified using established taxonomic keys. The study had recorded a rich diversity of SIFs belonging to multiple orders, families, and genera, with Cypriniformes dominating the assemblage. Diversity indices, including Shannon–Wiener and Simpson indices, had indicated moderate to high species diversity across study sites. The findings had highlighted the ecological importance, nutritional value, and conservation concerns of SIFs in the region. Anthropogenic pressures such as habitat degradation, pollution, overfishing, and the introduction of exotic species were identified as major threats. The study had emphasized the need for region-specific conservation strategies and sustainable fisheries management to protect these valuable bioresources.
Keywords: Small indigenous fish species, ichthyofaunal diversity, freshwater ecosystem, Malda district, conservation, West Bengal.
Page No: 239-245