The blood of fresh water, edible fish, Cyprinus carpio was exposed to sub lethal concentration of fenthion for 24, 48, 72 and 96 h to evaluate alterations in the levels of minerals i.e., sodium, potassium, chloride, calcium and magnesium . The increased mineral sodium and potassium play an important role in neuromuscular excitability, acid-base balance and increased osmotic pressure of the fish. The decreased calcium is of great importance in blood coagulation, muscle contraction and nerve transmission of the fish. The increased magnesium participates in principal metabolic activities, in formation of bones and teeth. Reduction in Chloride ion contents may be due to blockage of chloride ion from gut into serum due to Fenthion stress.

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Water is one of necessity of life without which it is not possible for life to sustain. Approximately 71% part of the earth is enclosed with water in which 97% seawater, 2% polar ice caps, and 1% is fresh water. Water quality is an indicator of environmental health and well being of society. The environment nearby river area are very productive, beside this they also have economically values for fisheries, tourism, and recreational activities (Donde and Patil, 2018).  In India, approximately 1000 rivers are present which are source of livelihood for large number of population.

Body composition is an analysis of carbohydrates, proteins, and moisture and ash contents of fish. The body composition was studied using as an index of growth studies of Indian major carp's Catla, Rohu and Mrigala and a minor carp Cyprinus carpio in the Halali and Tawa Reservoirs. The protein and lipid contents of three fish species showed the successive decrease in their estimated values, whereas muscle glycogen content in fish species understudy showed a significant increase during the study. The variation of Liver somatic index observed could be due to increased metabolic activity. Considering the fact of comparatively low-fat content all four species were found to be an ideal food for human being.

Mumbai is situated at the top of the Ulhās River on the western coast of India. It is covered by the Arabian Sea to the west. In Mumbai sandy soil is predominantly present due to its proximity to the sea. The present study was conducted during the winter season month of March and April 2017 inhabited areas. Soil samples were collected from different areas of Mumbai. Soil pH an content in soil were measured by using the standard method. The standard deviation was conducted on all variables. Our study showed that the pH value is in the alkaline range in different areas of Mumbai. It could be due to the decreased ground level of water, industrialization, pollution, inhabitation, and heavy construction in the area. Our study suggests that alkaline soils increase the salt content, could lower nutrition and mineral absorption leading to difficulty in taking up agricultural production.