File:Bacillus and Moraxella growth on blood agar.jpg

English: Bacillus species are typically aerobic or facultative anaerobic, meaning they can grow in the presence or absence of oxygen. They can grow well on blood agar plates because blood agar provides essential nutrients, including amino acids, vitamins, and hemin, which can support their growth.Bacillus colonies on blood agar are often characterized by their large, flat, creamy or opaque appearance. They may also exhibit irregular edges and a matte surface. Hemolysis patterns can vary, with some Bacillus species displaying beta-hemolysis (complete lysis of red blood cells) and others displaying alpha-hemolysis (partial lysis, leading to a greenish discoloration around colonies). Moraxella species are typically aerobic and grow well on blood agar plates. However, they are more fastidious in their nutritional requirements compared to Bacillus. They may require additional nutrients or specific growth factors for optimal growth and colonies on blood agar are often small, smooth, and translucent. They may appear slightly raised and have a moist or glistening appearance. Moraxella species are generally non-hemolytic, meaning they do not cause lysis of red blood cells, and you would not observe clear zones around their colonies on blood agar