A recent study has shown that there has been a 43 per cent reduction over the past five years in the population of Indus River dolphin inhabiting the area between the Guddu and Sukkur barrages.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/study-finds-43pc-decrease-dolphin-population-across-sindh
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/dawn-pakistan
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sindh
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pakistan
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-asia
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fish
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wwf
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fisheries-0
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species