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Habitat Use of Fishes in streams of Kalakad Mundanthurai Tiger Reserve, India

J. A. Johnson, M. Arunachalam


Habitat inventory and utilization of habitat by fishes were assessed in six selected streams in Kalakad Mundanthurai Tiger Reserve. The major habitat types; pool, riffle, run and cascade were identified. Fish population were estimated from pools, runs, riffles and cascades using underwater observation and fish catch in each habitat. Ten cyprinid fishes were recorded from the study streams and the assemblage structure was varied between 2 and 6. Habitat utilization coefficient was evaluated for individual species using electivity index. Based on the habitat utilization five habitat use guild (pool, riffle, run, cascade and generalist) were proposed. Danio aequipinnatus, Tor khuree and Puntius kannikattiensis were utilized the pool habitat. Rasbora daniconius found in run guild. The members of riffle and cascade guilds were Bhavania australis and Puntius tambraparaniei. The fishes Horalabiosa joshuai and Garra mullya were established in all possible habitat types and they were the members of generalist guild.


assemblage structure, habitat guild, habitat use, stream fishes, western ghats.

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