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European grayling (Thymallus thymallus) — Salmonidae

European grayling

Thymallus thymallus
Family: Salmonidae
LC · Least Concern

The European grayling (Thymallus thymallus) is a freshwater fish of the family Salmonidae that grows up to 60 cm.

Length
60 cm
Water
Freshwater
Depth
15.0–? m
Diet
Carnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Edibility
Highly prized

Description

The European grayling is a graceful salmonid of the family Salmonidae reaching about 60 cm. The streamlined, silvery-grey body has an adipose fin between the dorsal and tail fins and, very characteristically, a strikingly large, colourful, sail-like dorsal fin, especially in males. Freshly caught the fish smells of thyme, from which it takes its scientific name Thymallus. The grayling lives in cool, fast-flowing, oxygen-rich rivers and streams of Europe, in the grayling zone named after it, and is regarded as an indicator of clean water. It hunts insect larvae, flying insects from the surface and small crustaceans. In spring it spawns on gravel. The grayling is a popular, choosy target for fly fishing.

Frequently asked questions

How do you recognise the European grayling?

The European grayling has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern.

Where does the European grayling live?

The European grayling lives in fresh water and is mostly found around mixed bottom.

How big does the European grayling get?

The European grayling grows to a maximum of about 60 cm. On average the species is around 30 cm.

Is the European grayling dangerous to humans?

No, the European grayling is harmless to humans.

Is the European grayling edible?

Yes, the European grayling is a highly prized food fish.

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All data

Identification

Dutch name
Vlagzalm sourced
English name
European grayling verified
Scientific name
Thymallus thymallus
Family
Salmonidae
Other names
European grayling; Grayling verified

Appearance

Size class
Large verified
Max length (cm)
60.0 verified
Average length (cm)
30.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey sourced
Pattern
Plain sourced
Tail shape
Forked inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Freshwater verified
Substrate
Mixed bottom sourced
Min depth (m)
15.0 verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Social behaviour
Schooling verified
Territorial
No verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
Yes verified
levensduur_max_jaar
14.0 verified

For anglers

Edibility
Highly prized verified
Fishing method
Klassiek vliegvissen met droge vlieg of nimf in heldere, stromende rivieren; een geliefde, kieskeurige sportvis sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

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

Same genus Thymallus

More from the family Salmonidae

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