Rhizopus Nigricans is a type of mould that can be commonly found on decaying fruit and vegetables. It is also referred to as bread mould, black bread mould, or simply Rhizopus. These synonyms describe the appearance and common habitat where this mould can be found. Rhizopus Nigricans is an opportunistic pathogen and it can cause severe health issues for individuals with compromised immune systems. Therefore, it is important to take measures to prevent the growth of this mould, such as ensure proper storage of food and maintain cleanliness in living spaces.