Bass (scientific name: Lateolabraxjaponicus), true perch family perch animals, "China's four famous freshwater fish" one. Perch body long lateral compression, lower jaw longer than the upper jaw, meat solid garlic clove-shaped, in freshwater growth and fertilization, inhabiting the bottom of the clear running water, lurking during the day, night activities, prey on shrimp and small fish. Its distribution in the western Pacific Ocean, China's coast are produced, to the Yellow Sea, Bohai Sea more.
The body is long, the front part is flat, thick, subcylindrical, and gradually flattened and thinned backward; the dorsal and abdominal edges are shallowly arcuate; the dorsal and abdominal edges are shallowly arcuate, the front part of the trunk is slightly higher, and the body is the highest at the base of the ventral fin; the caudal peduncle is low and long. Head broad, flat, dorsal margin shallowly arcuate, intersecting maxilla at about 25 degrees, ventral margin of head shallowly oblique. Snout broad, rounded, snout about twice as long as eye diameter. Nostrils 2. Eyes small, rounded, superiorly lateral, slightly less than twice as far from posterior margin of gill cover bone as from end of muzzle. Mouth broad, telescopic, with low slanting of the oral fissure. Lips hypertrophied. Maxilla slightly longer than mandible, maxilla exposed, posterior end rounded, reaching below posterior margin of pupil. Maxilla, mandible, plow bone and palatine bone with chorionic tooth groups. Tongue broad, rounded, slightly free anteriorly. Gill pores broad; fourth gill arch without posterior fissure. Gill cover membrane attached to isthmus. Gill cover strips 6. Gill rakers short, granular. Pseudogills well developed. Nasal spines 1, bluntly pointed. Antennal dorsal premaxillary process high. Gill cover bone with 1 low rib, end flattened. Lower gill cover bone and intergill cover bone without spines. Brachial spines absent above pectoral fin base. Interocular septum concave. Anterior and posterior nostrils with short tubular dermatomes. Other parts without pits, without dermatophores.