Fringebarbel sturgeon (Acipenser nudiventris) fish species and information / pictures of Fringebarbel sturgeon - Acipenser nudiventris

Fringebarbel sturgeon (Acipenser nudiventris) fish species information

Scientific Name
Acipenser nudiventris

Common Name
Fringebarbel sturgeon

Biology
Occurs in the sea close to shores and estuaries and in deep stretches of large rivers. Juveniles live in shallow riverine habitats (Ref. 59043). Found over mud and usually solitary. Feeds on mollusks, amphipods and chironomid larvae. Spawns from end of April to June (end of May in Rioni River, Black Sea) (Ref. 3193). Spawning takes place in strong-current habitats in main course of large and deep rivers on stone or gravel bottom (Ref. 59043).

Classification

Classified By

Lovetsky, 1828

Class

Ray-finned fishes (Actinopterygii)

Order

Sturgeons and Paddlefishes (Acipenseriformes)

Family

Sturgeons (Acipenseridae)

Distribution

Region

Europe

Distribution

Europe: Black, Azov, Caspian and Aral Sea, ascending some rivers (Danube up to Bratislava, Volga up to Kazan, Ural up to Chkalov), unknown or very rare in others. On the verge of extinction in its natural range. Extirpated in Aral basin; nearly extirpated in Black Sea basin; only occasional records from Danube and lower Volga; only a very small population remaining in Rivers Ural (Russia, Kazakhstan) and Rioni (Georgia); no natural spawning population in Iran; established in Lake Balkhash where it forms a large population (Ref. 59043). Artificially propagated (Ref. 6866). International trade restricted (CITES II, since 1.4.98; CMS Appendix II).

Range

57°N - 36°N, 14°E - 53°E

Environment

Climate

Temperate

Water Temperature From

10 °C

Water Temperature To

20 °C

Depth From - meters

30 m

Depth To - meters

60 m

Zone

demersal

Environment

Marine; freshwater; brackish; demersal; anadromous (Ref. 51243); depth range 30 - 60 m (Ref. 3397)

Trophic Level

3.33 s.e. 0.45 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

200 cm

Common Length

132 cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial; aquaculture: commercial

Vulnerability

Very high vulnerability (85 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (K=0.04-0.12; tmax=30; Fec=165,000)

Threat To Humans

Harmless

IUCN Red List Status

Critically Endangered (CR) (A2cde)