Malacopterygii is a scientific name for a group of fish that are characterized by their soft, flexible fins. It is often used by biologists and researchers to identify this particular group of fish. However, there are also some other synonyms for malacopterygii that can be used interchangeably. Some of these synonyms include soft-rayed fish, soft-finned fishes, and ray-finned fishes. These terms can be useful for those who are less familiar with scientific names and prefer more commonly known terms. Regardless of which term is used, these fish share the same unique characteristics and appeal to those who appreciate the beauty and diversity of aquatic life.