Huchen (Hucho hucho) fish species and information / pictures of Huchen - Hucho hucho

Huchen (Hucho hucho) fish species information

Scientific Name
Hucho hucho

Common Name
Huchen

Biology
Usually solitary, inhabits deeper regions of swift flowing streams with oxygen rich waters. Adults are territorial but not solitary (Ref. 26170). Carnivore. Juveniles feed mainly on invertebrates and adults mostly on fishes, but also prey on amphibians, reptiles, small mammals and waterfowl (Ref. 26170). Important sport fish with minimum size of catch from 50-55 cm. Transplantations of young artificially incubated and reared fish have not been successful. Depletion of stocks due to overexploitation, industrial pollution, waterway redirection and badly designed or non-existent fish ladders in dams and reservoirs. Territorial, but migrates short distances upstream for spawning (Ref. 556). Reported to be one of the biggest freshwater fishes of the world, reaching a length of over 2 m and weight of over 100 kg (Ref. 26170); which is probably erroneous (A. Ma

Classification

Classified By

Linnaeus, 1758

Class

Ray-finned fishes (Actinopterygii)

Order

Salmons (Salmoniformes)

Family

Salmonids (Salmonidae)

Distribution

Region

Europe

Distribution

Europe: Danube drainage. Introduced into other European river basins when their numbers declined due to ecological changes in the Danube. Appendix III of the Bern Convention (protected fauna).

Range

50°N - 44°N, 8°E - 21°E

Environment

Climate

Temperate

Water Temperature From

6 °C

Water Temperature To

18 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; benthopelagic; potamodromous (Ref. 51243)

Trophic Level

4.17000007629395 s.e. 0.74 Based on food items.

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

150 cm

Common Length

70.0 cm

Phylogenetic Diversity Index

PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial; aquaculture: commercial; gamefish: yes

Vulnerability

Very high vulnerability (77 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (tm=5; tmax=15)

Threat To Humans

Harmless

IUCN Red List Status

Endangered (EN) (B2ab(ii,iii))