Acipenser mikadoi Hilgendorf, 1892
Sakhalin sturgeon
Acipenser mikadoi
photo by Chernyak, A.

Family:  Acipenseridae (Sturgeons), subfamily: Acipenserinae
Max. size:  150 cm TL (male/unsexed)
Environment:  demersal; freshwater; brackish; marine, anadromous
Distribution:  Northwest Pacific: Bering Sea, Tumnin (Datta) river, to northern Japan and Korea. This species was formerly regarded to be a population of Acipenser medirostris (Ref. 6866).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 33-40; Anal spines: 0-0; Anal soft rays: 22-30. Body shields in 5 rows; dorsal shields 7 to 11, lateral 22 to 36 and ventral 10.
Biology:  Commercially cultured in Japan (Ref. 6866). From April to May adults feed in fresh water and return to the ocean during the fall (Ref. 12218). Generation time: 15 years (Ref. 116373).
IUCN Red List Status: Critically Endangered (CR); Date assessed: 14 September 2019 (A2bc; C2a(i,ii)) Ref. (130435)
Threat to humans:  harmless


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