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)