see text Aulorhynchidae, the tube-snouts, is a small family of marine ray-finned fishes belonging to the suborder Gasterosteoidei in the order Perciformes.

[3] Other authorities treat the Gasterosteoidei as the infraorder Gasterosteales within the suborder Cottoidei or as a sister clade to the Zoarcales in the order Zoarciformes.

[4] Some authorities include the genus Aulichthys in the Hypoptychidae,[5][6] but the 5th edition of Fishes of the World puts this taxon in the family Aulorhynchidae.

[7] Aulorhynchidae includes two monospecific genera, i.e. the family comprises 2 species:[3] Aulorhyncidae tubesnouts are characterised by looking like elongated sticklebacks as they have long, slender bodies and have a series of 15 small spines to the front of the dorsal fin.

Like related taxa these fishes produce an adhesive substance in their kidneys which they use to create egg masses which are then attached to kelp in Aulorhynchus and inside ascidians in Aulichthys.