BéarlaRutilus albus is characterized by a typical subterminal mouth, so the lower lip is shorter than the upper one, snout rounded. Body silver white colour in life, while the peritoneum is striking by dark (black). Dorsal, anal, pectoral and ventral fins are yellowish, pale or transparent. Caudal fin is elongated (<20% TL), sharp, spear-shaped and deeply cut. Dorsal and ventral fins are slightly concave. Scales are relatively small (4.07±0.05/SL) and smaller than diameter of the eye. Rutilus albus is distinguished from other species of the subgenus Rutilus by the following combination of characters: maximum body depth 22.5–27.5 % SL; head length 22.0–27.5% SL; length of base of anal fin 13.0–15.5% SL; length of base dorsal fin 12.0–14.5% SL; length of pre-anal fin 63–70% SL; length of caudal peduncle 20.5–23.5% SL; distance A–C 30.5–36.5% SL; branched rays in fin D 8–9; branched rays in fin A 8–9; branched rays in fins V 8; branched rays in fins P 15–17; L.L. 41–46; vertebrae. 38–40; pharyngeal teeth 5–5, gill rakers on first left gill arch 8–11/12–16 (mean=9.0/13.9). Modal value of branched rays in fins D and A is 8 (Ref. 87899).