The Family Gasterosteidae, commonly known as the stickleback family, is a group of small, freshwater and marine fishes that are found in temperate regions around the world. These fish are characterized by their distinctive bony armor plates and spines, which provide protection from predators. While "Family Gasterosteidae" is the scientific name for this group of fish, there are several synonyms that are also used to refer to them. Some of these include the pygmy sunfish family (Elassomatidae), the freshwater and saltwater stickleback family (Gasterosteidae), and the Nine-spined sticklebacks (Pungitius spp). Regardless of what name they are given, these fish are fascinating creatures that have adapted to a wide range of habitats and ecological niches.