Definition
'Scardinius' is a genus of freshwater fish, closely related to the roach. It's part of the carp family (Cyprinidae). The most well-known species in this genus is the rudd (Scardinius erythrophthalmus). These fish are typically found in Europe and parts of Asia. They prefer weedy areas of lakes and rivers. Think of 'Scardinius' as the family name of rudd-like fish. They are known for their vibrant coloration, especially the red fins.