This fish is from the youngest fish-bearing Subgroup on Orkney, the Eday flags. There is a great deal of resemblance with the well know species Eusthenoptheron foordi from the Upper Devonian of Miguasha, Canada. The species Eustenopteron foordi has been described by Jarvik in great detail in several publications.
It was a very fast swimming top predator. Probably the dipnoan Pentlandia macroptera was its prey.