Nowadays, food safety and quality have become critical issues of great concern throughout the world. The issue of Halal food particularly has attracted public attention in Malaysia. Muslim consumers should be sure about the food quality in Halal Food Products starting from the ingredients. The confidence can be gained when the whole processes from the production, processing and distribution of the products are traced and confirmed to be Shariah-compliant ones. One of the current important issues nowadays which set as a background of this research is feeding animals with unclean food or unnatural feed to the animals. According to Islamic Jurisprudence, these animals are termed as al-Jallalah or contaminated animals, they are called Coprophagia or Coprophagy. ‘Jalla’ means contaminant or impurity. There are several issues of aquatic animals which need a clear clarification on their status whether they are Halal or haram to be consumed. For example, catfish (Clariasbatrachus, Linnaeus), which is fed with filth or najs and catfish (Pangasiushypopthalmus) which is fed with derivatives of pig organs in several ponds at Batu Gajah, Tronoh and Papan, Perak. The mixture in animals feed with such impurities is applied to save the maintenance and fasten the growing of fish. This research aims to identify the concept of al-Jallalah and its characteristics. It also aims to develop the standard of the contaminated animals (al-Jallalah) and to create new mobile application on this issue for the future development of meat and poultry industry. This study helps to enhance the quality of meat and poultry, to provide consumers with informative choices and it can be used as a marketing tool for the Halal Industry in the future.