Environment: milieu / climate zone / depth range / distribution range
Ekologi
marina; sötvatten; brackvatten bottenlevande; anadrom (Ref. 51243). Temperate; 35°N - 2°S, 97°W - 132°E (Ref. 54266)
Northwest Pacific: China and Japan (Sagami Sea) (Ref. 4537). Reported from Korea (Ref. 12218). Pearl River and Chinese sea (Ref. 42845).
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 346 cm TL hane/ej könsbestämd; (Ref. 52325); common length : 39.0 cm TL hane/ej könsbestämd; (Ref. 35840); publicerad maxvikt: 600.0 kg (Ref. 47439); rapporterad maxålder: 33 år (Ref. 52325)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 50 - 57; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 32 - 40. Body shields in 5 rows; dorsal shields 10 to 17.
Fry can be found in slow moving waters, adults in deep waters (Ref. 12218). Used in Chinese medicine (Ref. 12166). Reported to reach a length of more than 3 meters (Ref. 109736).
Birstein, V.J., 1993. Sturgeons and paddlefishes: threatened fishes in need of conservation. Conserv. Biol. 7:773-787. (Ref. 6866)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Fiskeri: kommersiell
Verktyg
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 15.6 - 26.5, mean 23.5 °C (based on 180 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
Trofisk nivå (Ref.
69278): 3.5 ±0.37 se; based on food items.
Generation time: 12.1 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Resiliens (Ref.
120179): Mycket låg, lägsta populationsfördubblingstid mer än 14 år (Tm=9-26; Tmax=33).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (79 of 100).