Sesbania grandiflora a terrestrial plant may be the God gifted and very scientific plant species and this may help in inland-fisheries in according to seasonal nitrogen demand. Sesbania grandiflora and associated Rhizobium florundica, in a new synthetic Ecology. These may help in fish-growth and reproduction by means of symbiotic process of fixing nitrogen to Nitrate (NO₃^-1) and provide supplementation through leaching from fisheries surrounding uplands specially in tropical climate. Other plants species Aeschynomene aspera, A indica the submerged species may also helping in fisheries as nitrogen demands in fisheries comes through different symbiotic nitrogen fixation may take place in their stems.