RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River US Cam

Largest measured gudgeon: 17.3 cm

The largest gudgeon measured in Environment Agency surveys of the River US Cam was 17.3 cm, recorded at Sawston Paper Mill on 2 May 1991.

Across 2,763 measured gudgeon, the median measured length was 10.3 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 US Cam.

See gudgeon records across England →

Most recent observation2 June 2026Pampisford Mill · 28 fish
Largest measured gudgeon
17.3 cm
Median length
10.3 cm
Fish measured
2,763
Survey locations
11

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
17.3 cm2 May 1991Sawston Paper Mill29459
17.3 cm30 Apr 1991Hinxton29457
16.8 cm16 Dec 1996Sawston Paper Mill29475
16.8 cm24 Sept 1993Hinxton29465
16.8 cm2 May 1991Sawston Paper Mill29459
16.8 cm2 May 1991Sawston Paper Mill29459
16.8 cm2 May 1991Sawston Paper Mill29459
16.8 cm30 Apr 1991Hinxton29457
16.8 cm30 Apr 1991Hinxton29457
16.3 cm16 Dec 1996Sawston Paper Mill29475

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
Pampisford Mill1 May 19912 Jun 20269
Littlebury26 Apr 199112 Mar 20257
P.B.I (Trumpington Meadows)7 May 199126 Jul 20139
Hinxton30 Apr 19913 Jul 20135
Byron's Pool Bypass Channel4 Apr 20114 Jul 20124
Hauxton Junction11 Nov 201011 Nov 20101
DS Hauxton Mill Bridge17 Sept 200811 Nov 20102
Sawston Paper Mill2 May 199115 Jun 20104
Hauxton Mill Bridge17 Sept 200816 Mar 20102
Rectory Farm3 May 199117 Dec 19963
Gt Chesterford29 Apr 199112 Dec 19963

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

1991–2026

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 2,763 measured fish were spread across different length ranges.

Smallest
2.5 cm
Lower quarter
9.2 cm
Median
10.3 cm
Upper quarter
11.3 cm
Largest
17.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River US Cam

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

Roach Chub Perch Dace Brown / sea trout Bullhead

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 →