The Microdesmidae, the wormfishes and dartfishes, were a family of goby-like fishes in the order Gobiiformes, more recent workers have placed this taxon within the Gobiidae, although the researchers do not define the taxonomic status of this grouping within that family.
A group of fish previously classified as Microdesmidae, now thought to be closely related to wormfishes and dartfishes, were part of the order Gobiiformes. However, recent studies have suggested placing this taxon under the family Gobiidae, although its exact classification within that family remains uncertain.