Peptone, fish powder is widely used in microbiology as a nutrient source for growing bacteria, fungi, and other microorganisms. It provides essential amino acids, peptides, and nitrogen compounds that support microbial growth in culture media. This makes it a key component in laboratories for research, diagnostics, and industrial fermentation processes. Additionally, it is utilized in the production of vaccines, enzymes, and antibiotics, where consistent microbial growth is critical. In the food industry, it serves as a flavor enhancer and protein supplement in various products. Its high nutritional value also makes it suitable for use in animal feed to promote growth and health.