Acipenser medirostris Green sturgeon

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Acipenser  medirostris  Ayres, 1854
Family:	Acipenseridae (Sturgeons) , subfamily: Acipenserinae			picture (Acmed_u0.jpg) by Gotshall, D.W. Map
Order:	Acipenseriformes  (sturgeons and paddlefishes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Green sturgeon
Max. size:	213 cm TL (male/unsexed; Ref. 2850); max. published weight: 159.0 kg (Ref. 2850)
Environment:	demersal; anadromous; freshwater; brackish; marine
Climate:	temperate; 10 - 20°C; 59°N - 30°N
Importance:	fisheries: minor commercial; gamefish: yes
Resilience:	Low, minimum population doubling time 4.5 - 14 years (K=0.05-0.09)
Distribution:   Gazetteer	North America: Aleutian Islands and the Gulf of Alaska to Ensenada, Mexico. Considered vulnerable in Canada. The Asian population is now considered to be a separate species A. mikadoi (Ref. 6866). International trade restricted (CITES II, since 1.4.98).
Diagnosis:	Dorsal spines (total): 0-0; Dorsal soft rays (total): 33-35; Anal spines: 0-0; Anal soft rays: 22-28. Characterized by a single row of 1 to 4 bony plates along the midventral line between the anus and the anal fin, and about 33 to 35 rays in the dorsal fin. Dorsal arises at posterior third of the total length; anal fin arises under posterior part of dorsal; pectorals originate low on the body just behind gill opening and are large and rounded; pelvics arise near the anus. Generally olive to dark green, lower parts more or less whitish green; a longitudinal olive-green stripe on side between lateral and ventrolateral plates, another on midventral surface; fins grayish to pale pale green (Ref. 27547).
Biology:	Found in estuaries, lower reaches of large rivers, and in salt or brackish water off river mouths (Ref. 5723). Probably spawns in fresh water (Ref. 27547). May cover considerable distances in the ocean (Ref. 27547). Edible but with a disagreeable taste and unpleasant odor (Ref. 1998)
Red List Status:	Vulnerable, see IUCN Red List  (A1ac) , Sturgeon Specialist Group , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Page, L.M. and B.M. Burr. 1991. (Ref. 5723)
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        Photo Courtesy of FishBase

        A worker with the Oregon Department of Fish and Wildlife studies 

        a green sturgeon. (Dept. of Fish & Wildlife photo)

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Map Curtsey of the University of California at Davis