Jingszo !

Ferruaspis brocksi is described and placed as an early diverging member of the southern radiation of Osmeriformes.

Preserved stomach contents indicate that the species fed on numerous phantom midge larvae (Chaoborus), adult insects or isolated wings, and a bivalve.

The distribution of melanophores indicates that the species was counter-shaded with two lateral stripes. Based on the locality where the fossils were found it is likely that the species spent its entire life in fresh water, unlike most extant Osmeriformes.

The description of F. brocksi highlights the ability of exceptionally well-preserved specimens to reveal aspects of the paleobiology of extinct species.