Protopsetta Schmidt, 1904 Cleisthenes is a genus of righteye flounders native to the northwest Pacific Ocean.

Both species in the genus are commonly known as Sôhachi in Japan.

[1][2] The genus is named after the Athenian noble and democrat Cleisthenes.

There are currently two recognized species in this genus:[3]

This Pleuronectoidei-related article is a stub.