Open Access Research Paper Views (333) Download (6) Analysis of trophic gradient through environ-mental filter influencing fish assemblage structure of the river Teesta in Eastern Himalayas Munmun Chakrabarty, Sumit Homechaudhuri J. Bio. Env. Sci.4( 4), 218-232, April 2014. Key: Dietary compositionFeeding guildHill-streamIchthyofaunaNiche filter Details