👉 In biology, a subfamily is a group of closely related species that are genetically identical but may have different populations or distributions. Subfamilies are typically defined by their genetic relationships with each other and can be further divided into more specific groups based on their common ancestors. For example, the family of salmonid fish (e.g., cod, haddock, pike) is a subfamily because they share a common ancestor that gave rise to all members of the family. In this case, the