Definition: Etheostominae are a group of bacteria that primarily inhabit the gut of marine animals, including humans, and play an important role in the digestion process of those organisms. They have a unique ability to digest complex carbohydrates and lipids by breaking them down into simpler substances that can be absorbed into the bloodstream. Etheostominae also contribute significantly to the overall health and function of the gut microbiota, which is essential for maintaining the balance between the diet and the body's internal