Endemic Fishes of Thamirabarani River
Seven species, Garra joshuai, Garra kalakadensis, Haludaria kannikattiensis, Hypselobarbus tamiraparaniei Mesonemachilus tambraparniensis, Neolissochilus tamiraparaniensis, and Dawkinsia tambraparniei are strictly endemic to this protected area in Kalakkad Mundanthurai Tiger Reserve
Bhavania annandelei is endemic to Agasthiyarmalai
