Common names from other countries
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Acipenseriformes (Sturgeons and paddlefishes) >
Polyodontidae (Paddlefishes)
Etymology: Polyodon: Greek, polys = a lot of + Greek, odous = teeth (Ref. 45335); spathula: Polyodon, many toothed, perhaps due to the numerous gill rakers because adult paddlefish lack teeth, although young fish has many small teeth, and spathula meaning spatula, due to its elongated snout (Ref. 79012).
More on author: Walbaum.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bottenlevande; flodvandrande (Ref. 51243); djupintervall 2 - ? m. Subtropical; 10°C - 18°C (Ref. 2060); 49°N - 29°N, 112°W - 77°W (Ref. 86798)
North America: Mississippi River basin from southwestern New York to Montana and south to Louisiana; Gulf Slope drainagaes from Mobile Bay in Alabama, to Galveston Bay in Texas, USA. Formerly in Great Lakes basin, probably extirpated. At least one country reports adverse ecological impact after introduction.
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 221 cm TL hane/ej könsbestämd; (Ref. 86798); common length : 120 cm TL hane/ej könsbestämd; (Ref. 12193); publicerad maxvikt: 90.7 kg (Ref. 3221); rapporterad maxålder: 55 år (Ref. 46974)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Snout long, canoe-paddle-shaped; gill cover with large, fleshy, pointed flap (Ref. 86798).
Usually inhabits water deeper than 1.2 m in slow-flowing large rivers, lakes, and impoundments (Ref. 86798). Feeds on plankton. The extended upper jaw (= paddle) may help to channel plankton into the mouth. Threatened due to over harvesting, habitat loss and pollution (Ref. 58490).
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
IUCN Red List Status (Ref. 130435)
Human uses
Fiskeri: kommersiell; Akvarium: Offentliga akvarier
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.2500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00430 - 0.00969), b=3.09 (2.98 - 3.20), in cm Total Length, based on LWR estimates for this species (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.1 ±0.0 se; based on diet studies.
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (tm=6-9; tmax=30).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).