RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Blackwater

Largest measured gudgeon: 19.9 cm

The largest gudgeon measured in Environment Agency surveys of the River Blackwater was 19.9 cm, recorded at Lyons Hall (River Blackwater) on 7 May 1993.

Across 6,461 measured gudgeon, the median measured length was 11.3 cm.

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

See gudgeon records across England →

Most recent observation8 November 2023Dorewards Hall · 16 fish
Largest measured gudgeon
19.9 cm
Median length
11.3 cm
Fish measured
6,461
Survey locations
24

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
19.9 cm7 May 1993Lyons Hall (River Blackwater)14136
18.2 cm14 Apr 1987Rye Mill14063
17.5 cm29 Mar 1990Lyons Hall (River Blackwater)14104
17.2 cm16 Mar 1987Coggeshall14066
17 cm26 Apr 1990Greys Mill14092
17 cm26 Feb 1987Bradwell Hall14068
17 cm27 Jul 1984Saint Marys Road14034
16.8 cm26 Apr 1990Greys Mill14092
16.5 cm14 Apr 1987Rye Mill14063
16.5 cm23 Jul 1984Bradwell Hall14039

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
Dorewards Hall19 Jul 19848 Nov 202310
Pointwell Mill31 Mar 198726 Oct 20237
Smallands Hall10 Aug 198412 Oct 202312
Braxted FGS6 Aug 198411 Oct 202316
Upstream Braxted Hall8 Aug 19847 Oct 202312
Greys Mill20 Jul 19844 Oct 202313
Saint Marys Road27 Jul 19843 Oct 20238
Stock Hall13 Aug 19841 Oct 202313
Blue Mills9 Aug 198428 Sept 202320
Coggeshall18 Jul 198426 Sept 202318
Kelvedon Coalyard31 Jul 198423 Sept 202315
Rye Mill14 Apr 198721 Sept 202310
Bradwell Hall23 Jul 198419 Sept 202313
Stisted FGS13 Jul 198415 Sept 202320
Upstream Langford Intake26 Jul 201326 Jul 20131
Langford14 Aug 19849 Oct 20086
Downstream Braxted Hall7 Aug 198430 Sept 20089
Feeringbury Hall26 Jul 198415 Sept 20088
Covenbrook Hall7 May 198710 Sept 20086
West Mill27 Feb 19878 Sept 20088
Hobbs Meadow11 Jul 19841 Sept 20087
Bradwell Bridge12 Jul 19849 Sept 20057
Lyons Hall (River Blackwater)10 Jul 198430 Aug 20058
Ashmans Farm3 Aug 198422 Sept 19993

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

1984–2023

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 6,461 measured fish were spread across different length ranges.

Smallest
2.9 cm
Lower quarter
9.7 cm
Median
11.3 cm
Upper quarter
13 cm
Largest
19.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Blackwater

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

Roach Chub European eel Perch Dace Pike

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 →