Chub (Squalius cephalus) fish species and information / pictures of Chub - Squalius cephalus

Chub (Squalius cephalus) fish species information

Scientific Name
Squalius cephalus

Common Name
Chub

Biology
Most abundant in small rivers and large streams of barbel zone with riffles and pools. Found along shores of slow-flowing lowland rivers, even in very small mountain streams, and in large lake, undertaking spawning migration to inflowing streams. Adults are solitary while juveniles occur in groups. Feeding larvae and juveniles live in very shallow shoreline habitats. Feed on a wide variety of aquatic and terrestrial animals and plant material. Large individuals prey predominantly on fishes. Breed in fast-flowing water above gravel bottom, rarely among submerged vegetation. Often form fertile hybrids with Alburnus alburnus (Ref. 59043). Popular with amateur sport fishermen. Can be caught with various baits and lures. The flesh is of poor quality

Classification

Classified By

Linnaeus, 1758

Class

Ray-finned fishes (Actinopterygii)

Order

Carps (Cypriniformes)

Family

Minnows or carps (Cyprinidae)

Distribution

Region

Eurasia

Distribution

Eurasia: North, Baltic, northern Black, White, Barents and Caspian Sea basins, Atlatinc basins southward to Adour drainages (France), Great Britain north to 56°C, Scandinavia: southern Finland, Sweden north to abut Stockholm. Mediterranean basin from Var to Hérault (possibly Aude) (France) drainages. Introduced elsewhere, Naturally absent from Italy and Adriatic basin.

Range

64°N - 35°N, 10°W - 60°E

Environment

Climate

Temperate

Water Temperature From

4 °C

Water Temperature To

20 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; brackish; ; pH range: 6.0 - 7.8; dH range: 8 - 25 benthopelagic; potamodromous

Trophic Level

3.03 s.e. 0.46 Based on diet studies.

Occurs in Marine / Salt water

False

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

60.0 cm

Common Length

30.0 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: minor commercial; gamefish: yes

Vulnerability

Moderate vulnerability (44 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (K=0.12-0.28; tm=3-7; tmax=10; Fec=20,000)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)