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Species diversity

Where in Slovakia do the most fish species live?

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Fishing districts in the selection
199
Watercourses and water bodies
160
Most species
Štrkovisko Adamov
Value
12 species

What the data show

The number of species in a fishing district speaks about the diversity of the water: a varied environment, clean water and connection with other waters give more species. From the GBIF database, which collects records from observations, collections and research, we counted how many fish species are documented around each fishing district.

In first place is the OR Patkový Piesok fishing district (14 species), followed by OR Hámre (12 species) and Štrkovisko Adamov č. 1 (12 species). Among streams, the Štrkovisko Adamov comes out best (12 species).

How to read these numbers and what they do not say

The figure is the number of documented records, not a count of fish. There are usually more records where there is more monitoring (close to towns and research institutions), so the ranking partly reflects the interest of observers as well. A species that has never been recorded in the area is not necessarily absent there.

Where to find it on the map

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Detailed filtersregion, district, riverbed, depth, shading, satellites, water chemistry and pollution, fish, geology

1445fishing districts
Pick a category to narrow the selection. Next to each option you can see how many fishing districts remain.
Map color
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Move the map with two fingers. In full-screen mode one finger is enough.

    The line color of a fishing district corresponds to the value “Most fish species (GBIF)”. The filter “fishing districts with documented fish species” is on; in the Filters menu you can adjust it, and in the Map color menu you can change the value by which the lines are colored. Fishing districts without data are gray.

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    Ready-made filter combinations: click to open the map with the number of fishing districts

    Ranking of fishing districts

    The first 25 fishing districts in the selection

    1. OR Patkový PiesokTrnava Region14 species
    2. OR HámreTrnava Region12 species
    3. Štrkovisko Adamov č. 1Štrkovisko Adamov · Trnavský kraj12 species
    4. Štrkovisko Adamov č. 2Štrkovisko Adamov · Trnavský kraj12 species
    5. Štrkovisko OširídTrnava Region12 species
    6. Štrkovisko u JaníčkovTrnava Region12 species
    7. Morava č. 7bMorava · Trnava Region11 species
    8. Štrkovisko Boričky I.Trnava Region11 species
    9. Štrkovisko BrodskéTrnava Region11 species
    10. Štrkovisko UnínTrnava Region11 species
    11. Chorvátsky kanálBratislava Region10 species
    12. Dudváh č. 1Dudváh · Trnava Region10 species
    13. OR Melečka č. 1OR Melečka · Trnava Region10 species
    14. OR Melečka č. 2OR Melečka · Trnava Region10 species
    15. Čierna voda č. 1Čierna voda · Trnava Region10 species
    16. Štrkovisko LúčkyTrnava Region10 species
    17. Štrkovisko U horáraBratislava Region10 species
    18. Dunaj č. 3Danube · Trnava Region9 species
    19. Štrkovisko Zelená voda 2Bratislava Region9 species
    20. Štrkovisko Zrkadlový HájBratislava Region9 species
    21. Dunaj č. 3 – MR Malý ZemníkDanube · Bratislava Region8 species
    22. Dunaj č. 3 – MR Veľký ZemníkDanube · Bratislava Region8 species
    23. Dunaj č. 3 – zdrž VD (Hrušov – Čunovo)Danube · Trnava Region8 species
    24. Dunaj č. 4Danube · Bratislava Region8 species
    25. Melioračný kanál TvrdoniceTrnava Region8 species

    Showing 25 of 199 fishing districts. You can find all of them on the map above.

    Ranking of streams

    Most species across the fishing districts of the stream. Streams with at least two fishing districts are counted; individual areas are in the ranking of fishing districts.

    1. Štrkovisko AdamovDanube basin · 2 of 2 fishing districts with documented species12 species
    2. MoravaDanube basin · 4 of 9 fishing districts with documented species11 species
    3. Čierna vodaDanube basin · 4 of 4 fishing districts with documented species10 species
    4. OR MelečkaVáh basin · 2 of 2 fishing districts with documented species10 species
    5. DudváhVáh basin · 1 of 8 fishing districts with documented species10 species
    6. DanubeDanube basin · 13 of 21 fishing districts with documented species9 species
    7. MyjavaDanube basin · 2 of 5 fishing districts with documented species8 species
    8. VN Železná studničkaDanube basin · 2 of 2 fishing districts with documented species7 species
    9. Little DanubeDanube basin · 3 of 6 fishing districts with documented species6 species
    10. Štrkovisko DrahovceVáh basin · 2 of 2 fishing districts with documented species6 species
    11. Štrkovisko MaduniceVáh basin · 2 of 2 fishing districts with documented species6 species
    12. Štrkovisko Horná StredaVáh basin · 1 of 4 fishing districts with documented species6 species
    13. VáhVáh basin · 5 of 29 fishing districts with documented species5 species
    14. IpeľHron basin · 1 of 7 fishing districts with documented species5 species
    15. PopradBodrog and Hornád basin · 2 of 18 fishing districts with documented species4 species

    River basins and regions

    Share of fishing districts with documented species

    River basins

    Regions

    Frequently asked questions

    Where does the species list come from?

    From the public GBIF database: observations, collections and scientific records around the fishing district. It is not the official list of fish in the fishing district; that is a matter for the user and the angling union.

    Why do some fishing districts have few species?

    Either few species live there (a mountain stream), or they were rarely recorded there.

    More discoveries

    Where the data come from and what they do not say

    Data and methods used:

    • GBIF: records of fish species occurrence

    What this data does not tell you. The measurements come from stations near the fishing district and may be old; the model estimates (stream zone, depth, hardness) are only approximate. The ranking is about the water, not about the fish: it does not say whether or which fish are in the fishing district, nor what the fishing rules are. A district without data is not in the ranking, even though it may have excellent water.

    Water quality in a stream is assessed by the SHMÚ yearbooks, see The cleanest water in Slovakia.