• Kalaimagal P
• Muthalagi, S
• Senthil Kumar G

Abstract: Freshwater ecosystem has an endemic flora and fauna including freshwater crabs. They are ecologically and medically essential macro-inbertebrates. As literature on diversity, richness, abundance and evenness of freshwater Brachyuran crabs are very meagre the present study was undertaken. Over the course of a year freshwater crabs were collected from the paddy field of Kancheepuram district by various methods based on the ecosystem and the collected specimens were preserved for future studies. The diversity of fresh water crab from the paddy field of Kancheepuram was studied. The study revealed that the Gecarcinucidae crab Oziotelphusa biloba was the most predominant species which is followed by Oziotelphusa bouvieri. Maximum population density of the crabs was recorded during last month of the year and the minimum was recorded during the fifth month of the year.

Freshwater Crab, Diversity, Richness, Evenness, Paddy Field.

"Studies on Diversity of Freshwater Crabs (Decapoda: Brachyura: Gecarcinucidae) Collected from in and Around Paddy Field of Kancheepuram District, Tamil Nadu.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 10, page no.b768-b773, October-2025, Available :http://www.jetir.org/papers/JETIR2510193.pdf

"Studies on Diversity of Freshwater Crabs (Decapoda: Brachyura: Gecarcinucidae) Collected from in and Around Paddy Field of Kancheepuram District, Tamil Nadu.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 10, page no. ppb768-b773, October-2025, Available at : http://www.jetir.org/papers/JETIR2510193.pdf