Oncorhynchus keta (Walbaum, 1792)

Jouladeh-Roudbar, Arash, Ghanavi, Hamid Reza & Doadrio, Ignacio, 2020, Fig. 4 in Fig. 4 in Fig. 3 in Fig. 21. Sesarmops mora n in Paralbunea dayriti, Zoological Studies 59 (21), pp. 1-303 : 218-219

Oncorhynchus keta (Walbaum, 1792) – Non-native

Salmo kayko Walbaum [J. J.] 1792: 72; Type locality: Kamchatka, Russia. No types known.

Salmo keta Walbaum [J. J.] 1792: 72; Type locality: Rivers of Kamchatka, Russia. No types known.

Salmo japonensis Pallas [P. S.] 1814: 382; Type locality: Islands and Amur River. Lectotype: ZMB 23548 (dry). Paralectotypes: NMW 91112 (1); ZMB 23565 (1).

Salmolagocephalus Pallas [P. S.] 1814: 372; Type locality: Bering Sea, Okhotsk Sea. No types known.

Salmo consuetus Richardson [J.] 1854: 167; Type locality: Yukon River to falls above confluence of Porcupine River, perhaps higher, northwest North America. Holotype (unique): BMNH.

Salmo dermatinus Richardson [J.] 1854: 169; Type locality: Yukon River, northwestern North America. Holotype (unique): BMNH.

Salmo canis Suckley [G.] 1859: 9; Type locality: Streams along Puget Sound, Washington, U.S.A. Syntypes: (several) lost in transit. Non-types: USNM 2004 [= USNM 2068] (1).

Oncorhynchus haberi Hilgendorf [F. M.] 1876: 26; Type locality: Fish market, Hokkaido and Yokohama, Japan. No types known.

Common name: Pr: Azad mahi keta, En : Chum salmon.

Diagnosis: Lack of distinct black spots on the back and tail and by the presence of 18 to 28 short, stout, smooth gill rakers on the first arch. Pelvic fins with axillary process, caudal truncate to slightly emarginated, Large individuals are steel-blue dorsally, with speckles of black, silver on the sides silvery to white ventrally. Males have tinges of black on the tips of its caudal, anal and pectoral fins.

Meristic characters: D: III–IV 10–14, A: III 13– 17, P: 14–16, V: 10–11, LL: 124–153 GR: 18–26, TV: 59–71.

Distribution: Caspian Sea basin ( Fig. 408). Some old studies reported them from southern Caspian Sea ( Holcik and Razavi 1991; Walczak 1972) but no new record.

Taxonomy: Berg (1949) placed in Oncorhynchus .

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