Evaluation of Fisheries and the Executives in Rihand Reservoir

Abstract

The investigation surveys the current status of fisheries in Rihand repository in connection to past status regarding fish species decent variety, trophic measurements of fish network, inclines in fish get and the physic-substance properties of the water body. Species-wise month to month get information gathered from yearly fish get records of Branch of Fisheries, Rihand office broke down present the status. Shannon-Wiener List indicated an apparent decrease in species assorted variety from 1971-72 (H=2.94) and 2015-16 (H=2.59). There was huge misfortune in species wealth during a similar period as it has declined from 40 species, 28 genera and 11 families to 22 species, 16 genera and 8 families (2015-16). Occasionally, the species assorted variety was seen as at its top during storm season (H=2.2), agreeing with good conditions, for example, adequate water and abundant nourishment assets. Species extravagance was at its best in the long stretch of May-June while species equality (J=0.85) was most noteworthy in post storm demonstrating a uniformly dispersed and rich fauna in the rainstorm and post rainstorm periods. The audit of writing on water quality status demonstrated the repository is meso-eutrophic in nature. The trophic measurements examination has appeared that the water body is commanded by herbivores, detritivores and omnivores (72.3%) trailed by mid-level carnivores (26.7%) showing holes at the top level predators. The absolute fish catch of the reservoir has expanded hardly from 152 tons in 1971 to 262 tons in 2016. The comparing unit get was 5.06 kg/ha/year and 8.68 kg/ha/year individually, which is still low. The CYDR of fish arrivals for the ongoing time frame was seen as an unassuming 1.8% with a few between year variances. Given the helpful amphibian condition and moderate profitability levels of the reservoir, fish catch can be expanded altogether just through continued stocking program close by compelling administration.