Environmental pressure and anthropogenic activities have a tremendous effect on the habitat of fishes. Concerning the 26 species from Western Ghats of India, lacking data in terms of the studies carried out on their reproductive biology, Osteobrama vigorsii (Sykes, 1839) is the endemic species from the Western Ghats, it is data deficient in various aspects of the reproductive biology. In the present studies, values obtained when computed in the FISAT II analysis tool disclosed the length-frequency expressed in the superimposed curve with the idealistic suitable exponent (Rn=0.914). Growth performance index (Ø), length at first capture (Lc), Total mortality represented by (Z), natural mortality by (M), and fishing mortality has been studied. The harvesting level is calculated by implementing relative output per recruit (Y/R), and proportional mass per recruit (B/R) analysis which is settled on the knife-edge assortment. This is a clear indication that the present level of fish harvesting (Ecurr) is still far away from the (Emax) level that is been computed for the fish under study. The results depict a high degree of morality in the fish population during a young age this would help the fishery unit to plan strategies in assigning programs for the sustainability of the fish in its natural habitat.
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