Gudgeon · Gobio gobio

Gudgeon in the South Forty Foot Tributary Sites

Largest measured gudgeon: 14 cm

The largest gudgeon measured in Environment Agency surveys of the South Forty Foot Tributary Sites was 14 cm, recorded at Northbeck on 13 December 1994.

Across 152 measured gudgeon, the median measured length was 10 cm.

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

See gudgeon records across England →

Most recent observation21 December 1994Haconby · 6 fish

Largest measured gudgeon: 14 cm
Median length: 10 cm
Fish measured: 152
Survey locations: 15

Individual EA measurements

Largest measured gudgeon

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

Length	Survey date	Survey location	Survey ID
14 cm	13 Dec 1994	Northbeck	69898
13.1 cm	13 Dec 1994	Mareham Lane No1	69897
12.5 cm	13 Dec 1994	Osbournby	69901
12.5 cm	13 Dec 1994	Silk Willoughby No2	69892
12.4 cm	13 Dec 1994	Osbournby	69901
12.4 cm	13 Dec 1994	Bellhouse Farm	69889
12.3 cm	13 Dec 1994	Northbeck	69898
12.2 cm	13 Dec 1994	Northbeck	69898
11.9 cm	13 Dec 1994	Silk Willoughby No2	69892
11.8 cm	13 Dec 1994	Mareham Lane No1	69897

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 surveyed	First recorded	Last recorded	Visits finding gudgeon
Haconby	21 Dec 1994	21 Dec 1994	1
Billingborough	21 Dec 1994	21 Dec 1994	1
Silk Willoughby West	15 Dec 1994	15 Dec 1994	1
Morton	15 Dec 1994	15 Dec 1994	1
Folkingham	15 Dec 1994	15 Dec 1994	1
Birthorpe	15 Dec 1994	15 Dec 1994	1
Aswarby	15 Dec 1994	15 Dec 1994	1
Washdyke	13 Dec 1994	13 Dec 1994	1
Silk Willoughby No2	13 Dec 1994	13 Dec 1994	1
Osbournby	13 Dec 1994	13 Dec 1994	1
Northbeck	13 Dec 1994	13 Dec 1994	1
Mareham Lane No3	13 Dec 1994	13 Dec 1994	1
Mareham Lane No2	13 Dec 1994	13 Dec 1994	1
Mareham Lane No1	13 Dec 1994	13 Dec 1994	1
Bellhouse Farm	13 Dec 1994	13 Dec 1994	1

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

1994–1994

Survey records by year

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

1594

Fish measured by surveyors

Measured length distribution

See how the 152 measured fish were spread across different length ranges.

Smallest: 2.7 cm
Lower quarter: 8.6 cm
Median: 10 cm
Upper quarter: 10.6 cm
Largest: 14 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the South Forty Foot Tributary Sites

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

3-spined stickleback Stone loach Dace 10-spined stickleback Pike 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 →