Fish fauna of Aralam wildlife sanctuary has been explored during early 1990s by Kerala Forest Research Institute, Thrissur and Zoological Survey of India, Calicut. 45 species of fishes among 17 families are found in the river and streams of Aralam Wildlife sanctuary. They include Malabar Mahseer (Tor malabaricus), Sahyadria denisonii, Haludaria fasciatus, Bhavania australis, Barilius bakeri, Ompok malabaricus and Glyptothorax sp., which are endemic to Western Ghats and endangered. Sahyadria denisonii is declared state protected fish popularly called "Miss Kerala".

Useful links on the taxa :

Zoological Survey of India

Denison's Barb (Miss Kerala)

Anoop V K

Malabar Mahseer

Anoop V K