Percopsid

These are, the Etheostomids or stone-toters; the Centrarchids or sun-fishes, and kindred forms; the Hyodontids or gizzard-shads; the Percopsids; the Aphredoderids; the Amblyopsids, (blind and cave fishes;) the Amiids or bow-fins, and the Lepidosteids, or alligator gars.

There are, in fact, with the exception of one Percopsid in the Columbia River, no representatives of most of the families which give the stamp of peculiarity to the Union's population; the Etheostomine and indeed all other Percids are wanting, and only a single species of Centrarchids--the Perch of the Sacramento (Archoplites interruptus)--has found its way across the mountains.

The two Green River percopsids were described in detail in Rosen and Patterson (1969), and the placement of these two species in Percopsidae was verified more recently by Patterson and Rosen (1989).