The Family Chimaeridae is a commonly known name for a group of fish species that have unique body shapes and are found in different parts of the world. There are several synonyms that have been used for this family, including ghost sharks, spookfish, ratfish, and rabbitfish. These names refer to their distinct morphologies; some have elongated snouts while others have rabbit-like front teeth. Some members of this family are also known for their bioluminescence, which is similar to that of deep-sea animals such as anglerfish. The Chimaeridae family is an ancient group that has been around for over 400 million years, making them an important part of the Earth's aquatic ecosystem.