The biggest difference between sole and tonguefish is the different living environments, sole can only live inside freshwater, while the tonguefish doesn't choose whether it's freshwater or not, and secondly, their body sizes are different, with the sole being smaller and the tonguefish being a bit larger. Tongue fish is also known as the dragon lily fish, is a warm temperate offshore large bottom fish, applicability is relatively strong, with a wide range of temperature, salt and applicability of variable environmental characteristics, nutritional value and food value are relatively high, moderate consumption of human health has certain benefits, so the tongue fish and the dragon lily fish is actually a kind of fish. Sole is a dragon lily fish, also called pedal fish, cow tongue fish, cow tongue, sub plate fish, tongue fish, etc. It is a kind of fish of plaice, tongue sole family, tongue sole genus, is a kind of warm warm temperate offshore large demersal fish, mainly inhabits in the sea area of Chinese offshore, the moderate temperature range is about 3.5-32 ℃, and the optimal water temperature is about 14-24 ℃. The meat of Longley's fish is tender, rich in nutrients, with high meat yield and delicious flavor.