Biology/Natural History: This small species is by far the lightest-colored species of Gnathophausia that I have seen. The light coloration is probably correlated with the shallow depth that the species is found at. The rostrum of this species, as in many Gnathophausia, is proportionately larger in small individuals, as are the spine on the antenna and the branchiostegal spine. The posterior lobe of the pleuron on the second abdominal segment forms a spine which is longer in mature males than in mature females.