TY - JOUR AU - Shrestha, Rajani AU - vaidya, sheetal PY - 2016/03/31 Y2 - 2024/03/29 TI - Brain Morphology and Feeding Habits of Some Fresh Water Teleosts of Nepal JF - International Journal of Applied Sciences and Biotechnology JA - Int J Appl Sci Biotechnol VL - 4 IS - 1 SE - Research Articles: Biological Sciences DO - 10.3126/ijasbt.v4i1.14586 UR - https://www.nepjol.info/index.php/IJASBT/article/view/14586 SP - 79-81 AB - <p>External morphology of teleost brain is organized in such a way that it reflects the correlation between sensory adaptation and principal modes of activity very clearly. <em>Channa</em> <em>gachua</em>, <em>Garra</em> <em>annandelei </em>and <em>Heteropneustes</em> <em>fossilis</em> are among the 168 fresh water fishes recorded in Nepal. While examining the gut contents of these fishes, it was found that <em>C. gachua</em> fed primarily on insects, <em>G. annandelei</em> fed mainly on filamentous algae whereas <em>H. fossilis</em> fed both on plants and animals. Their brain morphology revealed that olfaction in <em>C. gachua</em> was stronger than in <em>G. annandelei</em> and <em>H. fossilis</em>. Similarly, optic sense was also more powerful in <em>C. gachua</em> than in <em>G. annandelei</em> and in <em>H. fossilis</em>. On the contrary, cerebellum of <em>H. fossilis</em> was more developed than that of <em>G. annandelei</em> and <em>C. gachua</em>. These morphological differences of brain could be undoubtedly correlated with the carnivorous, herbivorous and omnivorous feeding behaviour of <em>C. gachua</em>, <em>G. annandelei</em> and <em>H. fossilis</em> respectively. Moreover, in all three fishes, around 20% of the total gut content was made of mud and sand, and they all had inferior mouths, indicating that they were bottom feeders.</p><p>Int J Appl Sci Biotechnol, Vol 4(1): 79-81 </p> ER -