NAYAK, P K, J MISHRA, T K MISHRA, and S AYYAPPAN. 2014. “Changes in Cortisol Concentrations During Early Development and Larval Metamorphosis in the Feshwater Catfish, Heteropneustes Fossilis (Bloch)”. The Indian Journal of Animal Sciences 71 (6). https://epubs.icar.org.in/index.php/IJAnS/article/view/36731.