Fish, carp family
Bleak
- Maximum length
- 25cm
- Maximum weight
- 0,1kg
- Best water temperature
- 12–24 °C
- Water today (4.1 °C)
- Tolerates it, but slowed down
- Fishing districts near where it occurs
- 46
About the species Bleak
How to recognise it
Slim, silver, laterally compressed body with an upper mouth. Blue-green back, scales that come off easily and a fairly long anal fin.
Where it lives
Still and flowing waters, in shoals near the surface, often by the bank and under bridges.
What it feeds on
Zooplankton, insects from the surface and small aquatic invertebrates.
Spawning
From May to July on gravel or on plants.
A very common small fish that takes a small hook with a worm or bread. It is an important food of predators.
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 4.1 °C today. The species tolerates this temperature (2 to 28 °C), but the water is colder than the ideal 12 to 24 °C. Fish tend to be slower and pickier.
- tolerates 2 to 28 °C
- best 12 to 24 °C
- spawning at 14 to 22 °C
- typical water today 4.1 °C
- Length
- up to 25 cm
- Weight
- up to 0.1 kg
- Oxygen
- Typical oxygen requirements
- Position in the food chain
- 3,1omnivore and small animals
The values are indicative and come from the FishBase database. 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).
- OR Patkový Piesok
- OR Hámre
- Štrkovisko Oširíd
- Štrkovisko u Janíčkov
- Chorvátsky kanál
- Štrkovisko U horára
- Štrkovisko Zrkadlový Háj
- Dunaj č. 3 – zdrž VD (Hrušov – Čunovo)
- Dunaj č. 4
- Dunaj č. 3 – MR Malý Zemník
- Dunaj č. 3 – MR Veľký Zemník
- Štrkovisko Kalinkovo
- Štrkovisko Rohlík
- Štrkovisko Rusovce
- VN Železná studnička č. 2
- VN Železná studnička č. 3
- Malý Dunaj č. 6
- Štrkovisko Kuchajda
- Štrkovisko Malé Čunovo
- Štrkovisko Štrkovec
- Štrkovisko Veľké Čunovo
- MR Kochanová
- Štrkovisko Drahovce č. 1
- Štrkovisko Drahovce č. 1a
- Štrkovisko Horná Streda č. 4
- Štrkovisko Klčoviny
- Štrkovisko Kňazová
- Štrkovisko Koplotovce
- Štrkovisko Leopoldov
- Štrkovisko Madunice
- Štrkovisko Madunice č.1
- Štrkovisko Peter
- Štrkovisko Ypsilon
- Váh č. 4
- Štrkovisko Vajnory 1
- Štrkovisko Vajnory 2
46 fishing districts in total, 36 shown. Show on map
Similar species
Photo credits
- Bleak: Photo: Harka, Akos, CC BY 3.0, Wikimedia Commons
- Roach: Photo: Scardinius_erythropthalmus1_resize.jpg: Original uploader was Algirdas at lt.wikipedia…, CC BY-SA 3.0, Wikimedia Commons
- Rudd: Photo: George Chernilevsky, Public domain, Wikimedia Commons
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.