RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Bollin

Largest measured gudgeon: 22.9 cm

The largest gudgeon measured in Environment Agency surveys of the River Bollin was 22.9 cm, recorded at Bobo10 on 3 August 2009.

Across 998 measured gudgeon, the median measured length was 11 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Bollin.

See gudgeon records across England →

Most recent observation9 September 2025Bobo07 · 2 fish
Largest measured gudgeon
22.9 cm
Median length
11 cm
Fish measured
998
Survey locations
27

Individual EA measurements

Largest measured gudgeon

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
22.9 cm3 Aug 2009Bobo10118865
19.8 cm26 Jun 2008Bobo25111657
17.2 cm29 Aug 2007Bobo19107878
16 cm23 Aug 2007Bobo30106476
15.7 cm7 Aug 2006Bobo25100573
15.7 cm17 Aug 1993Bo0356396
15.4 cm25 May 2010Bobo10121805
15.2 cm17 Jun 2008Bobo10111432
15.2 cm26 Jun 1996Bo2356157
15.2 cm26 Jun 1996Bo2256156

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where gudgeon were found

Each point marks a survey location with at least one gudgeon record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding gudgeon
Bobo079 Sept 20259 Sept 20251
Bobo059 Sept 20259 Sept 20251
Bobo3117 Aug 201113 Aug 20254
Bobo2020 Aug 200123 Jul 20258
Bobo133 Aug 201022 Jul 20252
Bobo1218 Aug 201122 Jul 20254
Bobo1022 Aug 200117 Jul 202511
Bobo1929 Aug 200715 Sept 20224
Bobo1414 Oct 201014 Oct 20101
Bobo259 Oct 200226 Jun 20086
Bobo3018 Aug 200323 Jun 20086
Mc0513 Jul 199927 Sept 20053
Mc0312 Jul 199927 Sept 20053
Bobo1612 Jul 19994 Aug 20054
Bobo1512 Jul 19994 Aug 20054
Bo0718 Aug 199321 Aug 20032
Mc0030 Jul 200230 Jul 20021
Mc0112 Jul 199926 Jul 20022
Bo0317 Aug 19939 May 20022
Bo2526 Jun 199626 Jun 19961
Bo2426 Jun 199626 Jun 19961
Bo2326 Jun 199626 Jun 19961
Bo222 Nov 199326 Jun 19962
Bo1727 Oct 199327 Oct 19931
Bo1526 Aug 199326 Aug 19931
Bo1226 Aug 199326 Aug 19931
Bo0518 Aug 199318 Aug 19931

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

1993–2025

Survey records by year

Each bar shows how many survey visits recorded gudgeon that year.

Fish measured by surveyors

Measured length distribution

See how the 998 measured fish were spread across different length ranges.

Smallest
1.2 cm
Lower quarter
9.4 cm
Median
11 cm
Upper quarter
12.4 cm
Largest
22.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Bollin

Compare other species with enough survey and measurement data for a detailed page.

Stone loach 3-spined stickleback Bullhead Brown / sea trout Chub Roach

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →