High Quality Content by WIKIPEDIA articles! Rhombosoleinae (Regan, 1910) is a subfamily of fish in the Pleuronectidae family, comprising nine genera and 19 species; all members of this subfamily are right eye flounders with asymmetrical pelvic fins. Species are typically demersal, living on bottoms in temperate marine waters on the continental shelf, although some species of Rhombosolea enter fresh water in New Zealand. They are found in waters around Australia and New Zealand, though the Remo flounder, Oncopterus darwinii, occurs in the southwestern Atlantic.