Scallop shell with comb shaped holes

Chlamydomonas scallop is a type of shellfish belonging to the family Chlamydomonas in the order Perciformes. The shell is fan-shaped, with two shells that are low and flat, and the shell height is slightly larger than the shell length; The dorsal margin is straight and the ventral margin is round; The top of the shell has shell ears on the front and rear sides, and the front ears are large; There is a threaded hole below the right anterior ear of the shell; The two shells are nearly equal in size, but the right shell is flatter and the left shell is more convex; Accompanied by spiny protrusions on the ribs, the shell color changes and is generally light brown; The inner surface of the shell is light in color, mostly pink, with the same rib pattern as the shell surface; The hinge joint is straight, without teeth, and the internal ligament is located in the groove of the three fish ligaments. Due to its bright, thin, and hard shell, with multiple radiating ribs on top, it resembles a sunflower fan in appearance, and there is a depression on the ventral surface of the front ear of the right shell.