What is the impact of climate change on fish life?

Creating employment to meet the nutritional needs, earning foreign exchange and the overall economy of Bangladesh Has been playing an important role in development. Bangladesh ranks third in the world in catching fish from inland water bodies. Bangladesh ranks fifth in fish farming. Rivers, canals, canals, beels, air ponds, lakes, floodplains, etc. of Bangladesh The total area of ​​inland water bodies and closed water bodies is about 4.7 million hectares. That There is also a huge sea area of ​​one lakh 66 thousand square kilometers. From all these waters of Bangladesh The current fish production is not enough compared to the size of the country. It is possible to produce much more from this.

Bangladesh's fish production from 2011 to 2012 was about 32.62 lakh metric Tons. There, according to the government's vision 2021 to 2020 to 2021 fish production The target has been set at 45.50 lakh metric tonnes. Although the country's fish production has been steady in recent years But it has increased as a result of the increase in scaffolding while fish production in inland open water Alarmingly reduced. There is a decrease in the biodiversity of fish. And one of the reasons is climate change Climate change is increasing the temperature of the environment Sea level is rising Salinity is increasing Drought is insufficient rainfall. Reproduction and migration are being disrupted.

 

April-May in seasonal ponds in our country Farmers release fish in ponds when rainwater collects in the month. Climate change has reduced rainfall or delayed the onset of rainfall. It is getting late to do this and again after releasing the fry late, the pond is drying up quickly. Time is running out and small fish have to be marketed before the fish grow up, which is causing them losses. Climate Fish breeding and fry in hatcheries as a result of changes in temperature and rainfall Production is being disrupted. Artificial insemination of fish in hatcheries due to unfavorable breeding environment and high temperature. Not responding. Eggs in the stomach are not actually laying eggs, eggs are being absorbed in the body and fish eggs Even if it can, it is not being fertilized or it is being fertilized again Being. Climate change is thus hampering fry production in hatcheries.

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