Abstract: The present invention relates to systems and apparatuses for raising aquatic animals in controlled environments in order to avoid disease and pollution, and for increasing the number of shrimp that can be raised in controlled environments. More particularly, the present invention generally relates to a shelving unit for raising aquatic animals in a controlled environment comprising a plurality of shelves having a top and bottom surface, wherein at least one surface is substantially solid to support the aquatic animals thereon and to allow feeding thereon by the aquatic animals. Also provided are systems comprising closed environments for containing water, at least one shelving unit, a feeding system for dispensing food onto the shelving unit, and a waste disposal system.