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Russian sturgeon (Acipenser gueldenstaedtii) — Acipenseridae

Russian sturgeon

Acipenser gueldenstaedtii
Family: Acipenseridae
CR · Critically Endangered
NativeIntroduced

The Russian sturgeon (Acipenser gueldenstaedtii) is a fish that lives in both fresh and salt water of the family Acipenseridae that grows up to 236 cm.

Length
236 cm
Water
Euryhaline
Depth
2.0–100.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Basins of the Black Sea, the Sea of Azov and the Caspian Sea; an anadromous migratory fish that grows up at sea and ascends the large rivers such as the Danube, Volga and Don to spawn.
Edibility
Highly prized

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Description

The Russian sturgeon is a large sturgeon of the family Acipenseridae reaching about 2.3 metres, sometimes more. It has a short, blunt and somewhat upturned snout; beneath the snout hang smooth barbels with which it probes the bottom. Like all sturgeons it bears five lengthwise rows of bony plates instead of ordinary scales. It is an anadromous migrant of the Black, Azov and Caspian Sea basins, growing up at sea and ascending great rivers such as the Danube and Volga to spawn. On the bottom it eats molluscs, worms, crustaceans and small fish. Its roe yields the famous osetra caviar, for which it has been heavily overfished; together with river barriers this has made the species Critically Endangered (CR).

Frequently asked questions

How do you recognise the Russian sturgeon?

The Russian sturgeon has a torpedo-shaped body, is mainly brown and shows a plain pattern. Large sturgeon with a short, blunt, slightly upturned snout, smooth barbels and five rows of bony plates (scutes) along the body.

Where does the Russian sturgeon live?

The Russian sturgeon lives in both fresh and salt water and is mostly found around sand or mud bottom. Basins of the Black Sea, the Sea of Azov and the Caspian Sea; an anadromous migratory fish that grows up at sea and ascends the large rivers such as the Danube, Volga and Don to spawn.

How big does the Russian sturgeon get?

The Russian sturgeon grows to a maximum of about 236 cm. On average the species is around 145 cm.

Is the Russian sturgeon dangerous to humans?

No, the Russian sturgeon is harmless to humans. None required: this species is harmless to humans.

Is the Russian sturgeon edible?

Yes, the Russian sturgeon is a highly prized food fish.

More photos

Russian sturgeon (Acipenser gueldenstaedtii) — Acipenseridae — 2
iNaturalist ((c) Евгений Софронов, some rights reserved (CC BY-NC))
Russian sturgeon (Acipenser gueldenstaedtii) — Acipenseridae — 3
iNaturalist ((c) varganimrod, some rights reserved (CC BY-NC))
Russian sturgeon (Acipenser gueldenstaedtii) — Acipenseridae — 4
iNaturalist ((c) varganimrod, some rights reserved (CC BY-NC))

Easily confused with

These species look like the Russian sturgeon and live in the same waters.

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All data

Identification

English name
Russian sturgeon verified
Scientific name
Acipenser gueldenstaedtii
Family
Acipenseridae
Other names
Danube sturgeon; Kura sturgeon; Osetr; Azov-Black sea sturgeon; Persian sturgeon verified

Appearance

Size class
Extra large verified
Max length (cm)
236.0 verified
Average length (cm)
145.0 verified
Body shape
Torpedo-shaped verified
Dominant colour
Brown sourced
Pattern
Plain sourced
Tail shape
Crescent (lunate) inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
Yes verified
Dorsal fins
One continuous sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Euryhaline verified
Substrate
Sand / mud bottom verified
Min depth (m)
2.0 verified
Max depth (m)
100.0 verified
Natural range
Basins of the Black Sea, the Sea of Azov and the Caspian Sea; an anadromous migratory fish that grows up at sea and ascends the large rivers such as the Danube, Volga and Don to spawn. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Molluscs, worms, crustaceans and small bottom-dwelling fishes sourced
Social behaviour
Solitary verified
Territorial
No verified
Activity
Nocturnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
levensduur_max_jaar
46.0 verified
Seasonality
Migrates up the rivers in spring and autumn to spawn on gravel beds; grows slowly and matures late. sourced
Special features
Large sturgeon with a short, blunt, slightly upturned snout, smooth barbels and five rows of bony plates (scutes) along the body. sourced

For anglers

Edibility
Highly prized verified
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Acipenser

More from the family Acipenseridae

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