RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Arun

Largest measured gudgeon: 15 cm

The largest gudgeon measured in Environment Agency surveys of the River Arun was 15 cm, recorded at Horsham STW on 31 July 2012.

Across 1,632 measured gudgeon, the median measured length was 9 cm.

Surveyors recorded weights for 1,283 gudgeon. The median was 0.3 oz (0.009 kg) and the largest recorded weight was 1.2 oz (0.033 kg).

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

See gudgeon records across England →

Most recent observation10 September 2025Crosby Farm · 6 fish
Largest measured gudgeon
15 cm
Median length
9 cm
Fish measured
1,632
Survey locations
17

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
15 cm31 Jul 2012Horsham STW132576
14.2 cm30 Jul 2002Roman Station72058
14.1 cm26 Jul 2022Horsham Downstream Pack Horse Bridge161208
13.8 cm2 Aug 2007Wellcross Bridge107398
13.7 cm10 Sept 2025Crosby Farm178576
13.7 cm9 Jul 2025Horsham Downstream Pack Horse Bridge177296
13.5 cm4 Aug 2016Chesworth Farm, Downstream Chesworth House148824
13.5 cm2 Aug 2007Wellcross Bridge107398
13.4 cm3 Aug 2006Horsham STW102193
13.4 cm21 Jul 2004Bucks Green80813

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
Crosby Farm10 Sept 202510 Sept 20251
Theale Farm9 Sept 201429 Jul 20252
Horsham Downstream Pack Horse Bridge26 Jul 20229 Jul 20252
Pallingham18 Sept 20038 Jul 202512
Bignor Farm12 Sept 200212 Sept 20246
Alfoldean Weir Upstream12 Jul 202412 Jul 20241
Pulborough Cut28 Sept 20075 Sept 20228
Chesworth Farm, Downstream Chesworth House20 Sept 20124 Aug 20162
Roman Station30 Jul 200226 Jul 201612
Horsham STW1 Aug 200226 Jul 201610
Bucks Green16 Aug 200227 Sept 20076
Wellcross Bridge2 Aug 20072 Aug 20071
Chesworth Farm2 Aug 200214 Aug 20065
Gibbons Mill31 Jul 200226 Jul 20065
Violets Farm sq8 Sept 20058 Sept 20051
Horsham-by-Pass sq2 Aug 20052 Aug 20051
Newbridge30 Jul 200214 Jul 20054

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

2002–2025

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 1,632 measured fish were spread across different length ranges.

Smallest
2.3 cm
Lower quarter
7.6 cm
Median
9 cm
Upper quarter
10.2 cm
Largest
15 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 1,283 gudgeon. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.2 oz (0.006 kg)
Median
0.3 oz (0.009 kg)
Upper quarter
0.5 oz (0.014 kg)
Heaviest
1.2 oz (0.033 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Arun

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

Roach Chub European eel Minnow Pike Perch

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 →