Actinopterygii (ray-finned fishes) > Acipenseriformes
(Sturgeons and paddlefishes) > Acipenseridae
(Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335). More on author: Lesueur.
Environment / Climate / Range
Marine; freshwater; brackish; demersal; anadromous (Ref. 51243); depth range 6 - 53 m (Ref. 93286), usually 6 - 34 m (Ref. 93286). Subtropical; 49°N - 28°N, 82°W - 65°W (Ref. 54259)
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 45 - 55 cm
Max length : 143 cm TL male/unsexed; (Ref. 6866); common length : 50.0 cm TL male/unsexed; (Ref. 12193); max. published weight: 23.0 kg (Ref. 6866); max. reported age: 67 years (Ref. 6866)
soft rays: 18 - 24. Snout short, bluntly V-shaped, not upturned at tip. Barbels short (Ref. 7251). Absence of fontanelle and post dorsal shields. Single row of pre anal shields, 6-11 (Ref. 4639). Dorsal shields 7-13, lateral shields 22-34 (Ref. 4639). Blackish viscera (Ref. 37032). Head and back dark, lower surface white (Ref. 37032). Anal fin origin beneath dorsal fin origin (Ref. 86798).
North America: St. John River in Canada to St. Johns River in Florida, USA. International trade banned (CITES I since 1.7.75).
Inhabit river mouths, lakes, estuaries, and bays; occasionally enters the open sea. Maximum known age is 67 years for females and 30 years for males. Flesh of good quality; eggs are suitable for caviar (Ref. 3192).
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. 96402)
Threat to humans
Fisheries: minor commercial; gamefish: yes; aquarium: public aquariums
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278
): 3.3 ±0.39 se; Based on food items.
Resilience (Ref. 69278
): Very Low, minimum population doubling time more than 14 years (K=0.04; tm=14-17; tmax=67; Fec=48,000).
Vulnerability (Ref. 59153
): Very high vulnerability (84 of 100) .