Ctenopharyngodon idella (Valenciennes, 1844) – Non-native (Fig. 174)

Leuciscus idella Valenciennes [A.] in Cuvier & Valenciennes 1844: 362; Type locality: China. No types known.

Leuciscus tschiliensis Basilewsky [S.] 1855: 233; Type locality: Gulf of Tschili [Tchili] and tributary streams, Manchuria, China. No types at ZIN.

Ctenopharyngodon laticeps Steindachner [F.] 1866: 782; Type locality: Hong Kong, China. Holotype (unique): NMW 79745.

Sarcocheilichthys teretiusculus Kner [R.] 1867: 356; Type locality: Shanghai, China and drainages in Gulf of Tschili. Syntypes: whereabouts unknown.

Pristiodon s iemionovii Dybowski [B. N.] 1877: 26; Type locality: Amur River, Ussuri River, Sungacha River, Lake Khanka [Chanka], and Sungari River, Russia. Syntypes: (many) whereabouts unknown.

Common name: Pr: Amour, Kapor Alafkhar, En: Grass carp.

Diagnosis: No barbels. Snout very short, its length less than or equal to eye diameter. Postorbital length more than half head length, caudal fin with 18 rays. Distinguished from rather similar species Mylopharyngodon piceus by combination of characters: body olive to brassy green above, silvery white to yellow below, elongated body, pharyngeal teeth laterally compressed, serrated, with a groove along grinding surface, usually in two rows, 2.5–4.2.

Meristic characters: D: III 6–8 (7), A: III 7–9 (8), P: 13–20, V: 7–8, GR: 15–18, LL: 34–47, TV: 40–47.

Distribution: Introduced widely elsewhere, found in all basins of Iran.

Taxonomy: Berg (1949) placed in Ctenopharyngodon.

Conservation: IUCN: Not Evaluated, PC: Non-native, Not Applicable.