Stylephorus

Stylephorus is a genus of deep-sea ray-finned fish. It contains a single species, Stylephorus chordatus, also called the tube-eye or thread-tail.

The phylogenetic position of the tube-eye has been controversial. It has been historically placed amongst Lampriformes, but more recent studies analyzing mitochondrial and nuclear DNA sequences indicate Stylephorus is instead a close relative of the order Gadiformes (cods and hakes). Formerly placed in its own order, Stylephoriformes, it is now considered the most basal member of the Gadiformes by Eschmeyer's Catalog of Fishes.