The Fish of Carp Family are two species of freshwater fish, the Tench (Tinca tinca) and the Roach (Rutilus rutilus). The Tench is a large, bottom-dwelling fish that can grow up to 60 cm in length and is found in slow-moving waters throughout Europe. The Roach is a smaller fish, growing up to 30 cm in length, and is found in rivers and lakes across Europe and Asia. Both species are popular with anglers and are considered good eating.