Food and Feeding habits of two Hill stream Fishes i.e. Rasbora daniconius and Noemachielus botia in selected streams of Southern Rajasthan, India

摘要

The food preferences depend greatly on the nature of food available in the living habitat, environmental conditions, size or sexual stages of fish as well as inter and intra specific competition. During present investigation the food and feeding habits of Rasbora daniconious and Noemachielus botia were studied. Observations on the food and feeding habits of Rasbora daniconius revealed that it is a surface or sub surface feeder and omnivorous mainly feeding on insects and their larvae, microcrustaceans and rotifers which formed 64.5% as animal food. Plant food includes green algae, diatoms and plant parts which constituted 33.5 % of total food. In contrast the observations on the food and feeding habits of Noemachielus botia revealed that it is a bottom feeder and carniomnivorous that mainly feeds on microcrustaceans and insect larvae. The animal food formed 65.3% and plant food constituted 19.9 % of total food items.