The gills of fish are sensitive to chemical and physical changes in the aquatic environment. Common pony fish Leiognathus equulus was caught from the Red Sea and Al-Shabab lagoon. This study was carried out to investigate the histopathological alternations induced by the Al-Shabab lagoon pollutants in gills. The common alternations observed were hyperplasia and fusion of gill lamellae, epithelial lifting, desquamation and necrosis of gill epithelial cells

An experiment was conducted to evaluate the heterotic expressions of twenty one crosses for twenty grain yield and quality traits. These crosses were generated in Line x Tester fashion by using three CMS lines and seven testers. A standard check Indira Sona, first hybrid rice of Chhattisgarh was used to estimate the standard heterosis. In present investigation we found that hybrid IR-58025A x Karmamahsuri showed significant negative heterosis for days to 50% flowering and plant height both so that this will be effective for developing short duration, semidwarf rice hybrid. Two hybrids, IR-79156A x RIL-62 and IR-79156A x Bagdidhan were showed significant positive relative heterosis, heterobeltiosis and standard heterosis over Indira Sona for grain yield per plant. Hybrid, IR-79156A x Bagdidhan showed significant positive standard heterosis for grain yield per plant and biological yield per plant which may be utilized in developing high yield potential hybrids. Crosses, CRMS-32A x Bagdidhan, IR-79156A x RIL-62 and IR-58025A x Karmamahsuri showed significant positive relative heterosis, heterobeltiosis and standard heterosis for head rice recovery. In view of both, grain yield and grain quality together, hybrid IR-79156A x RIL-62 exhibited significant relative heterosis, heterobeltiosis and standard heterosis for grain yield as well as for head rice recovery and other quality characteristics in the desirable range. So these promising cross combinations could be further used in rice breeding programme for developing high yielding rice hybrids with good grain quality.