The wild Chinese sturgeon is at risk of extinction after none of the rare fish were detected reproducing naturally in the polluted and crowded Yangtze river last year.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/wild-chinese-sturgeon-brink-extinction-polluted-yangtze
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/guardian-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fisheries-0
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/yangtze-kiang
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wwf