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Don ruffe (Gymnocephalus acerina) — Percidae

Don ruffe

Gymnocephalus acerina
Family: Percidae
LC · Least Concern

The Don ruffe (Gymnocephalus acerina) is a freshwater fish of the family Percidae that grows up to 21 cm.

Length
21 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Small groups
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Fresh water of the basins of the Black and Azov Seas, in slow- to moderately flowing lower reaches of rivers such as the Don and the Dnieper.
Edibility
Rarely eaten

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Description

The Don ruffe is a perch-like bottom fish of the family Percidae reaching about 21 cm. It resembles the common ruffe but has a longer, pointed snout; the yellow-brown body is covered with small dark spots and bears a continuous, spiny dorsal fin. The species lives in the fresh water of the Black and Azov Sea drainages, in slow to moderately flowing lower reaches of rivers such as the Don and the Dnieper. Mainly at night it searches the bottom for insect larvae, small crustaceans, worms and fish eggs. In spring it spawns on sand and gravel, where the eggs stick to the substrate. Through river works and water pollution it has declined locally, though globally it is assessed as Least Concern.

Frequently asked questions

How do you recognise the Don ruffe?

The Don ruffe has a torpedo-shaped body, is mainly yellow-gold and shows a spots pattern. Perch-like bottom fish with a long, pointed snout and a continuous, spiny dorsal fin; yellow-brown body with small dark blotches.

Where does the Don ruffe live?

The Don ruffe lives in fresh water and is mostly found around sand or mud bottom. Fresh water of the basins of the Black and Azov Seas, in slow- to moderately flowing lower reaches of rivers such as the Don and the Dnieper.

How big does the Don ruffe get?

The Don ruffe grows to a maximum of about 21 cm.

Is the Don ruffe dangerous to humans?

No, the Don ruffe is harmless to humans. None required: this species is harmless to humans.

Is the Don ruffe edible?

The Don ruffe is rarely eaten.

More photos

Don ruffe (Gymnocephalus acerina) — Percidae — 2
iNaturalist ((c) Anastasia Selezneva, some rights reserved (CC BY-NC))
Don ruffe (Gymnocephalus acerina) — Percidae — 3
iNaturalist ((c) Kira Marchenkova, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Don ruffe verified
Scientific name
Gymnocephalus acerina
Family
Percidae
Other names
Don ruffe; Donets ruffe; Don ersh verified

Appearance

Size class
Medium verified
Max length (cm)
21.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Yellow / gold sourced
Pattern
Spots sourced
Tail shape
Straight inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
Yes verified

Habitat & distribution

Water type
Freshwater verified
Substrate
Sand / mud bottom verified
Natural range
Fresh water of the basins of the Black and Azov Seas, in slow- to moderately flowing lower reaches of rivers such as the Don and the Dnieper. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Insect larvae, small crustaceans, worms and fish eggs from the bottom sourced
Social behaviour
Small groups verified
Territorial
No verified
Activity
Nocturnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Bottom-dweller; spawns in spring on sand and gravel, with eggs that stick to the substrate. sourced
Special features
Perch-like bottom fish with a long, pointed snout and a continuous, spiny dorsal fin; yellow-brown body with small dark blotches. sourced

For anglers

Edibility
Rarely eaten verified
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Gymnocephalus

More from the family Percidae

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