“…Previously it was abundant in rivers, lakes, canals and reservoirs (Pethiyagoda et al., ), but now the wild populations are declining due to various ecological changes to their habitat (Hossain, Hossain, Islam, et al., ; Hossain, Hossen, Ahmed, et al., ; IUCN Bangladesh, ; Mijkherjee, Praharaj, & Das, ). Therefore, it is categorized as vulnerable in Bangladesh (IUCN Bangladesh, ); lower risk near threatened in India (Balasundaram, Arumugam, & Murugan, ); threatened in Sri‐Lanka (IUCN Sri‐Lanka, ); and globally recognized as list concern (IUCN, ).…”