A multi-zoned screening apparatus is disclosed for separating fiber from a liquid medium during, for example, a grain wet mill or dry grind process. The apparatus can include a housing having a first and second zone and situated adjacent one another along a length of the housing. A cylindrical screen having a plurality of openings is situated lengthwise within the housing to correspond with the first and second zones. A conveyor is situated lengthwise within the screen and includes an elongated shaft having a first and second conveyor section and along a length of the conveyor that corresponds with the first and second zones, respectively. Each conveyor section is configured to move material in a direction along a length of the screen. In one example, the first conveyor section includes vanes and a ribbon flight helically winding about the vanes, and the second conveyor section includes a plurality of paddles.