Fishery provides a multitude of benefits ranging from employment to food security. Investigating the factors affecting fishing income and the fishing environment are crucial entry points for efficiency maximization intervention. A survey was conducted in all Woredas’ adjacent to Lake Tana. Data was gathered using household survey and focus group discussions and analyzed by a linear regression model. The results indicated that the fishery in Lake Tana is comprised of diverse individuals in relation to occupation, engagement intensity and membership to cooperatives. Fish related income was positively correlated to years of schooling and ownership of motorized boat while negatively correlated to membership to fish cooperatives. Interventions aimed at improving the market infrastructure, delivery of major fishery inputs, training on processing and use of by-products, revising the membership requirements and enforcement of fishery related laws are critical for sustainability of the fishery resource.

Present paper deals with the study of Physico-chemical parameters of Urinjikulam pond, Thiruthangal (Virudhunagar district, Tamil Nadu). Monthly variations in the physical and chemical parameters such as temperature, pH (7.5 to 8.8), dissolved oxygen (1.62-5.92 mg/L), total alkalinity (81-271mg/L), total hardness (48 to 364mg/L), chlorides (11 to 1030mg/L), Phosphate (0.36 to 2.86mg/L) and nitrate (0 to 0.40mg/L) were investigated. All the parameters were beyond the permissible limits.

This report documents the gross pathological appearance, histopathology and ultra-structural studies of the ocular abnormalities previously reported in farmed Atlantic halibut (Hippoglossus hippoglossus). 37% of eyes investigated were normal on gross and histopathological examination while 32% showed formation of an intraocular cyst in the choroid resulting in anterior movement of the retina. 27% showed scleral ectasia in which the posterior portion of the globe was enlarged, either generally or in a focal ectatic focus. In a small number of eyes the cystic posterior segment lesions contained fibrous and inflammatory tissue but most affected eyes showed cystic structures filled with gas or fluid. Although morphology was somewhat compromised in the majority of samples, histopathological and electron microscopic ultrastructural examination showed an endothelial lining to these posterior segment cysts suggesting that they have developed following gas bubble formation in vessels of the choroidal rete. This finding concurs with our previous research showing increased intraocular oxygen concentrations in the eyes of affected fish and suggests that the pathology seen here is predominantly associated with the formation of oxygen bubbles in the countercurrent multiplier system of the choroidal rete.