Here's a breakdown of the classification:
* Kingdom: Animalia
* Phylum: Chordata
* Class: Actinopterygii
* Order: Scorpaeniformes
* Family: Psychrolutidae
* Genus: *Psychrolutes*
* Species: *Psychrolutes marcidus* (the most common species, also known as the blobfish)
So, although they are often called "blobfish," they are technically members of the Psychrolutidae family.