Fish · GBIF taxon 2402120
Acipenser fulvescens
acipenser fulvescensAlso known as Rock Sturgeon, Rubbernose Sturgeon, Red Sturgeon
Lake sturgeons are living fossils of North American freshwaters, recognizable by their armored rows of bony scutes, shark-like tails, and sensitive chin barbels used to locate prey along lake beds. Females can live for over a century and do not reach sexual maturity until around twenty years of age, making populations exceptionally vulnerable to overfishing and dams. Spring spawning migrations send these massive, primitive fish ascending clear rivers, where they deposit eggs over gravelly rapids.
FreshwaterArmoredLong-Lived
—observations
—countries
—peak records
EndangeredConservation statusIUCN Red List categoriesLCNTVUENCREWEXEndangeredRed List categories, explained →
Diet & prey
- Crayfish
- Aquatic insect larvae
- Freshwater snails
Predators
- Sea lamprey
- Northern pike
- Walleye
ThreatsHistorical overfishing, dam construction blocking spawning rivers, habitat degradation, and pollution
HabitatsLarge freshwater lakes and river systems with gravel or cobble bottoms
Life span50 to 100+ years
Size / weightNot available
Classification
- OrderAcipenseriformes
- FamilyAcipenseridae
- GenusAcipenser
- Speciesacipenser fulvescens
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe from a respectful distance during spawning runs.
- What to notice
- Look for a large, torpedo-shaped body with bony plates along the sides and four sensory barbels beneath a flattened snout.
- Support conservation
- Give spawning fish ample space, stay out of riverbed gravel during breeding season, and handle hooked individuals gently in the water.
Responsible observation
- Spawning Observation: Watch spawning runs from riverbanks or bridges in spring without disturbing shallow gravel beds.
- Angling Regulations: Follow strict catch-and-release laws and keep heavy fish supported in water if accidentally hooked.
- Reporting Sightings: Share tagged sturgeon observations with local natural resource agencies to support restoration tracking.
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