Microdesmidae

Wormfishes
Nemateleotris magnifica
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Perciformes
Suborder:	Gobioidei
Family:	Microdesmidae Regan, 1912
Subfamilies & Genera
Subfamily Ptereleotrinae Aioliops Navigobius Nemateleotris Oxymetopon Parioglossus Ptereleotris Pterocerdale Subfamily Microdesminae Cerdale Clarkichthys Gunnellichthys Microdesmus Paragunnellichthys

Microdesmidae, the wormfishes and dartfishes are a family, of goby-like fishes in the order Perciformes. There are currently two sub-families in this family which were briefly treated as full families - the Ptereleotrinae (dartfishes) and Microdesminae (wormfishes).

They are found in shallow tropical waters, both marine and brackish, often burrowing in estuarine mud. They are small fishes, the largest species reaching only about 12 cm in length.