The present disclosure relates to a paddlewheel apparatus for a raceway pond. The raceway pond is used for aqua culture production.The raceway pond includes a plurality of elongated paddles coupled to a rotatable disc such that each elongated paddle is obliquely disposed on the rotatable discand extendsradially outwards from the periphery of therotatable disc.Each elongated paddle is operatively laterally bent at a predefined distancealong its length at an angle of around 45 degree in the direction of rotation of therotatable disc.The paddlewheel apparatus improves pumping efficiency and a horizontal and vertical mixing, and reduces the drag associated with the flow and power consumption. Fig.2
