Plankton samples collected from Loktak Lake (a Ramsar site) during November 2002-October 2004 revealed 51 species of Cladocera belonging to 28 genera and 7 families. Loktak lake holds the richest Cladocera biodiversity known from any individual aquatic ecosystem of India, so far.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/faunal-diversity-cladocera-crustacea-branchiopoda-loktak-lake-ramsar-site-manipur
[2] http://admin.indiaenvironmentportal.org.in/category/author/b-k-sharma
[3] http://admin.indiaenvironmentportal.org.in/category/author/sumita-sharma
[4] http://admin.indiaenvironmentportal.org.in/category/journal/journal-bombay-natural-history-society
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/loktak
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lakes
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fauna
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/manipur
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/north-east
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/freshwater-ecosystems
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources