In modern days, many people have fish as their pets at home. The fishes have been fed by the aquarist in the aquarium tanks which demands a management system. This project is a web-based online Aquarium system for an existing shop. This project is an attempt to provide the advantages of online Aquarium to customers of a real shop. It helps buying the shopping in the shop anywhere through internet by using a web application. Thus, the user will get the service of online Aquarium and home delivery from his favourite shop. This system can be implemented to any shop in the locality or to multi-national branded shops having retail shopping items. If shops are providing an online portal where their customers can enjoy easy shopping from anywhere, the shops won’t be losing any more customers to the trending online aquarium shops such as flip cart or eBay.