23/05/2026
AQIU celebrated World Fish Migration Day 2026 through the study on migratory fish and livelihood as “The River in Bangladesh : Species Conservation and livelihood Observation” which BCFRC, Center for Biology, Ecology and Environmental Science - CBEES & Department of Environmental Science & Resources are actively advocating strategy of ecosystem development and conservation. Program coordinator Abdullah Al Nahian and Sumaiya supported the events activities.
Migratory fish, such as Hilsha, play a vital role in the livelihood of local people in Mymensingh. These fish migrate from the sea to freshwater rivers for spawning, providing a crucial source of income and nutrition for the community.
Mentor (PI) Dr. Md Muzammel Hossain has investigated and found that the livelihoods of many fishermen and their families depend on the seasonal migration of these fish. During peak migration seasons, local fishermen engage in fishing activities to catch Hilsha and other migratory species, which are highly valued in local markets. The income generated from fishing supports their daily needs, education, and healthcare.
In addition to direct fishing, the presence of migratory fish stimulates related industries such as fish processing, trading, and transportation. Markets flourish with the arrival of these fish, contributing to the local economy.
Environmental changes, pollution, and barriers to migration can threaten these fish populations, impacting the livelihoods of local communities. Sustainable fishing practices and conservation efforts are crucial to ensure that migratory fish continue to support the socio-economic well-being of people in Mymensingh.
Dr. Md. Muzammel Hossain also found and reported that the absence of migratory fish in the region is primarily due to the disconnection between the Old Brahmaputra River and the major Jamuna River. This disconnection has significant changed in ecological and fishery implications.
Disruption of Migration Routes: The natural migration pathways for fish species like Hilsha and other migratory fish depend on continuous river systems. When the Old Brahmaputra is disconnected from the Jamuna River, it blocks the migratory routes, prenting fish from reaching their spawning grounds upstream.
Loss of Spawning Habitats: Disconnection leads to the loss or reduction of suitable spawning habitats in the upstream areas. Fish cannot reach these critical zones for breeding, resulting in a decline in fish populations.
Decline in Fish Population: Without access to traditional migration routes and spawning grounds, the populations of migratory fish decrease sharply, leading to their absence in local water bodies.
Impact on Livelihoods: The disappearance of these fish species affects local fishermen and communities that depend on migratory fish for their livelihood and nutrition.
Environmental Consequences: The ecological balance of the river system is disturbed, affecting biodiversity and river health.
Restoring connectivity between the Old Brahmaputra and Jamuna River is crucial for revitalizing migratory fish populations. Implementing measures such as removing barriers, creating fish passages, and managing river flows can help restore natural migration routes and support sustainable fisheries.
