RiverFish

Gudgeon · Gobio gobio

Gudgeon in the Main Avon Sites

Largest measured gudgeon: 18.5 cm

The largest gudgeon measured in Environment Agency surveys of the Main Avon Sites was 18.5 cm, recorded at Salisbury Wetherspoons on 12 September 2012.

Across 250 measured gudgeon, the median measured length was 12.3 cm.

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

See gudgeon records across England →

Most recent observation8 October 2025Downton · 10 fish
Largest measured gudgeon
18.5 cm
Median length
12.3 cm
Fish measured
250
Survey locations
25

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
18.5 cm12 Sept 2012Salisbury Wetherspoons134160
17.8 cm12 Sept 2012Salisbury Wetherspoons134160
16.4 cm12 Sept 2012Salisbury Wetherspoons134160
16.3 cm9 Sept 2022Ham Carrier161434
16 cm18 Oct 2005Ham Carrier87074
15.4 cm12 Sept 2019Ham Carrier155504
15.3 cm12 Sept 2019Ham Carrier155504
15.2 cm30 Aug 2023Ham Carrier164466
15.2 cm12 Sept 2012Salisbury Wetherspoons134160
15.2 cm10 May 2005A1R Salisbury to Kitts Island84525

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
Downton6 Sept 20228 Oct 20252
Avon Bridge5 Sept 200129 Aug 20242
Fordingbridge Rec22 Oct 200414 Aug 20246
Heale House at Netton13 Aug 202413 Aug 20241
Ham Carrier18 Oct 200530 Aug 20237
London Anglers Salisbury6 Sept 202215 Aug 20232
Stratford -Sub-Castle16 Aug 202114 Aug 20233
Wattons Ford Lower7 Sept 20227 Sept 20221
Wattons Ford7 Sept 20227 Sept 20221
River Avon at Maltings Car Park14 Oct 202114 Oct 20211
Downstream Wattons Ford18 Aug 202118 Aug 20211
Woodgreen- The Shallows17 Aug 202117 Aug 20211
Bugmoor Hatches17 Aug 202117 Aug 20211
Ringwood Downstream A319 Aug 20199 Aug 20191
Salisbury Wetherspoons CPUE8 Aug 20198 Aug 20191
Navigation11 Sept 20018 Aug 20194
Salisbury Wetherspoons12 Sept 201219 Aug 20142
A5R Ringwood to Bickerley Stream Confluence27 May 20045 May 20113
A1RA Bemerton Farm - EA Boom site4 May 20114 May 20111
A1R Salisbury to Kitts Island3 Jun 20048 May 20084
A4R Ibsley to Ringwood25 May 200424 Apr 20084
A2R Downton-Breamore5 Jun 200722 Apr 20082
A7R Royalty Gt.Weir to Clay Pool18 May 200518 May 20051
A3R Burgate to East Mills14 Apr 200514 Apr 20051
A6R Avon Turn - Winkton20 May 200420 May 20041

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

2001–2025

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 250 measured fish were spread across different length ranges.

Smallest
5.1 cm
Lower quarter
11.1 cm
Median
12.3 cm
Upper quarter
13.6 cm
Largest
18.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main Avon Sites

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

Bullhead Minnow Stone loach Brown / sea trout Atlantic salmon European eel

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 →