Introducing Pleuronectiformes

Pleuromorphs (scientific name: Pleuronectiformes) is an order of the class of radial fin fishes. It contains a group of carnivorous benthic fishes, collectively called flounders [Note 1]. There are more than 600 species in existence. The typical feature is that the body is flat and wide, and the eyes are located on the body. Same side. Flounder is an edible economic fish. Most of it is a marine product. It inhabits the continental shelf waters of medium depth from tropical to frigid zone, and a few live in fresh water. The body on the side with eyes is the back and the color is darker; the other side is the ventral surface and the color is lighter. There are long dorsal fins and anal fins along the dorsal and ventral margins. When resting on the bottom of the sea, part of the body is often buried in the sand. The color of the back of some flounders will become close to the color of the environment in order to integrate with the environment and avoid being spotted by predators.