Design, construction and installation of tanks and aquaria for the stocking and grow-out of Aquaculture species. Built in high quality, robust materials such as fibreglass/polyester, PVC, polypropylene, polyethylene, methacrylate/plexiglas, toughened glass, etc. Cylindrical, cylindroconical, cubic with rounded edges, self cleaning, with internal or external drains, with observation windows, with or without legs, insulated, stackable, portable,