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Fish, carp family

Kessler's gudgeon

Romanogobio kessleriinative speciesprotected all yearTolerates it, but slowed down
Maximum length
13cm
Best water temperature
10–20 °C
Water today (4.6 °C)
Tolerates it, but slowed down
Fishing districts near where it occurs
1
Kessler's gudgeon (Romanogobio kesslerii)
Photo: Akos Harka, CC BY-SA 3.0, Wikimedia Commons

About the species Kessler's gudgeon

How to recognise it

A small slender fish with an underslung mouth and a pair of barbels at the corners of the mouth. The individual gudgeon species can be told apart reliably only by small details.

Where it lives

Sandy and gravel bottoms of rivers.

What it feeds on

Small invertebrates and insect larvae from the bottom.

Classification under the decree

Decree of the Ministry of the Environment of the SR no. 381/2018 Coll. on fisheries.

Classification

A native species of fish or lamprey (Section 13, paragraph 1 of the decree).

Closed season, minimum size and daily limit

What the Fisheries Act says about Kessler's gudgeon. For guidance only; check it in the fishing regulations of the district.

Species protected all year

Section 10, paragraph 1, point i of the decree

fishing prohibited

this species may not be fishedoutside this period

You must not keep a fish of this species. If you happen to catch one, return it to the water as gently as possible.

Summary of Act no. 216/2018 Coll. and Decree no. 381/2018 Coll. (as of 6 Nov 2026). It may be out of date or contain an error, and exceptions apply on some waters. The permit and the fishing regulations of the district are binding. The fishing law, rule by rule.

Water temperature and requirements

At what temperature the species is active and how well today's water suits it.

Tolerates it, but slowed downTypical water in Slovakia is 4.6 °C today. The species tolerates this temperature (2 to 26 °C), but the water is colder than the ideal 10 to 20 °C. Fish tend to be slower and pickier.

  • tolerates 2 to 26 °C
  • best 10 to 20 °C
  • typical water today 4.6 °C
Length
up to 13 cm
Oxygen
Typical oxygen requirements

FishBase pre tento druh rozsah teploty neuvádza, preto teplotné nároky preberáme z príbuzného druhu Hrúz škvrnitý. Sú to len odhady, rozmery vychádzajú z databázy FishBase. In a particular water, fish behave according to the weather, air pressure, oxygen and food.

Where it was recorded

Fishing districts around which a record of this species exists (GBIF).

1 fishing district in total. Show on map

Catches of Kessler's gudgeon

Approved catches by anglers on this portal.

Nobody has logged a catch of this species yet. Be the first; once approved it will appear here and on the leaderboard.

Similar species

Photo credits

Minimum sizes, protection periods and permitted fishing methods are set by the fishing regulations and the conditions of the specific fishing district. Check them before you fish.