Achiroides Aesopia Aseraggodes Austroglossus Barnardichthys Bathysolea Brachirus Buglossidium Dagetichthys Dexillus Dicologlossa Heteromycteris Leptachirus Liachirus Microchirus Monochirus Paradicula Pardachirus Pegusa Phyllichthys Pseudaesopia Rendahlia Rhinosolea Solea Soleichthys Synaptura Synapturichthys Synclidopus Typhlachirus Vanstraelenia Zebrias The true soles are a family, Soleidae, of flatfishes.

The only true sole remaining in that region is Aseraggodes herrei of the Galápagos and Cocos Island.

Adult soles lie on their left (blind) sides on the sea floor, often covered in mud, which in combination with their dark colours, makes them hard to spot.

A flatfish resembling a small halibut or sole was observed by the bathyscaphe Trieste at the bottom of the Mariana Trench at a depth around 11 km (36,000 ft).

The earliest known fossil remains of soles are indeterminate otoliths from the Early Eocene-aged London Clay.