Flatfish entire order was John Roxborough Norman's "Monograph of the Flatfishes" published in 1934. New species are described with some regularity and undescribed species likely remain. Hybrids are well known in flatfishes. The Pleuronectidae, of marine fishes, have the largest number of reported hybrids. Two of the most famous intergeneric hybrids are between the European plaice ("Pleuronectes platessa") and European flounder ("Platichthys flesus") in the Baltic Sea, and between the English sole ("Parophrys vetulus") and starry flounder ("Platichthys stellatus") in Puget Sound. The offspring of the latter species pair is popularly known as the hybrid sole and was initially believed to
Peppered flounder Peppered flounder The peppered flounder ("Paralichthodes algoensis") is a flatfish of the Paralichthodidae family and the only species of the genus "Paralichthodes". It is a demersal fish that lives on sandy and muddy bottoms in subtropical waters, at depths of up to . Its native habitat is the southeastern Atlantic and the western Indian Ocean, specifically the African coastline from Mossel Bay, South Africa, to Delagoa Bay, Mozambique. It grows up to in length. The peppered flounder is a right-eyed flounder with an elongated, oval body. Its upper surface is brownish grey with small dark spots and its underside is