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FISH GUIDE · Freshwater

Ruffe: identification, habitat and fishing guide

Gymnocephalus cernua

Ruffe may occur among float-fishing catches. Identify it before handling its spines. The suggested worm presentation is an indicative adaptation for a venue where it is permitted.

Catalogue names : Ruffe. Forms and names may vary between habitats.

Editorial review : · This species guide is not permission to fish. Read the precautions below and check the current rules for your location before targeting a species. Some species or populations are protected.

Geographical distribution

Native to European North Sea, Baltic, Black Sea and Caspian drainages and east across Asia to the Kolyma. Introductions occur outside that range; the named major drainages do not imply uniform occurrence in their tributaries.

  • Native range : North Sea, Baltic, Black Sea and Caspian drainages
  • Native range : Siberia east to the Kolyma

Documented areas, not an exhaustive list. Presence in a region does not imply presence in every water body or permission to fish.

Distribution sources

Identification

Gymnocephalus cernua has dark spots, adjoining dorsal fins and spiny rays. Perch have vertical bars instead; compare the fins too.

Habitat

Calm or slow waters in lakes, canals and large rivers; observe a bottom area where tackle can be retrieved from the bank.

Diet

Zooplankton and small invertebrates, including chironomid larvae, worms and crustaceans.

Behaviour

A bottom-dwelling fish able to seek food in low light. This activity does not constitute permission for night fishing.

Fishing context and precautions

  1. From a stable, permitted bank, prepare a float, adjustable shotting and a single hook.
  2. Plumb an accessible bottom area and attach a small piece of permitted worm, leaving the point exposed.
  3. Present near the bottom and watch the float without dragging the rig into obstacles.
  4. On a clear indication, make gentle contact; prepare unhooking without grasping the spines. This adaptation of float fishing does not guarantee a ruffe.

A distinctive feature

Its sensory organs allow it to detect prey even in darkness.

Sources and review

Each reference includes its access date. Overall editorial review: . Local conditions and regulations may change.

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