United States (contiguous states) country information

Common names: Green sturgeon, Green sturgeon, Stutch'-un
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: of no interest | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: gamefish: yes;
Comments: Not common in Puget Sound, Washington in 1895 (Ref. 28609). Rarely found in freshwater. Sport fishery for fish exceeding 100 cm in Delta Area of San Francisco Bay (Ref. 4563). Also Ref. 4925, 6885, 28553. Status of threat: vulnerable. Criteria: 1,2 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983
National Database:

Common names from other countries

Esturgeon vert, Esturión verde, حفش أخضر, ... more

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335); medirostris: The specific name is derived from medirostris, referring to its moderate snout (Ref. 1998).
More on author: Ayres.

Environment: milieu / climate zone / depth range / distribution range Ecologia

marino; acqua dolce; salmastro demersale; anadromo (Ref. 120652); distribuzione batimetrica 0 - 80 m (Ref. 50610). Temperate; 10°C - 20°C (Ref. 2059); 65°N - 32°N, 166°W - 114°W (Ref. 54261)

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

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 Acipenser mikadoi (Ref. 6866).

Length at first maturity / Size / Peso / Age

Maturity: L_m ?, range 162 - ? cm
Max length : 270 cm TL maschio/sesso non determinato; (Ref. 96339); common length : 130 cm TL maschio/sesso non determinato; (Ref. 12193); peso massimo pubblicato: 159.0 kg (Ref. 2850); Età massima riportata: 60 anni (Ref. 72476)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 33 - 35; Spine anali: 0; Raggi anali molli: 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; pelvic fins 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 green (Ref. 27547). Barbels usually situated closer to mouth than to snout tip; coloration of scutes along side paler than skin (Ref. 86798).

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).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

IUCN Red List Status (Ref. 130435)

Endangered (EN) (A2bc); Date assessed: 14 September 2019

CITES (Ref. 128078)

Appendix II: International trade monitored

CMS (Ref. 116361)

Appendix II: Migratory species conserved through agreements

Threat to humans

Harmless

Human uses

Pesca: scarso interesse commerciale; Pesce da pesca sportiva: si

FAO(pesca: production, species profile; publication : search) | FishSource | Sea Around Us

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Trophic ecology
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Estimates based on models

Preferred temperature (Ref. 115969): 9.1 - 12.7, mean 10.6 (based on 50 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00324 (0.00142 - 0.00736), b=3.17 (2.99 - 3.35), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.5 ±0.52 se; based on food items.

Resilienza (Ref. 120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (K=0.05-0.09).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (80 of 100).

Climate Vulnerability (Ref. 125649): High to very high vulnerability (67 of 100).

Price category (Ref. 80766): Unknown.

Acipenser medirostris Ayres, 1854