Gudgeon · Gobio gobio

Gudgeon in the River Irwell

Largest measured gudgeon: 16.2 cm

The largest gudgeon measured in Environment Agency surveys of the River Irwell was 16.2 cm, recorded at Iwir20 on 7 June 2005.

Across 614 measured gudgeon, the median measured length was 8.2 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 Irwell.

See gudgeon records across England →

Most recent observation7 May 2014Iwir20 · 20 fish

Largest measured gudgeon: 16.2 cm
Median length: 8.2 cm
Fish measured: 614
Survey locations: 4

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
16.2 cm	7 Jun 2005	Iwir20	84863
16 cm	6 Jun 2006	Iwir20	100188
15.1 cm	6 Jun 2006	Iwir25	100984
14.6 cm	6 Jun 2006	Iwir25	100984
14.4 cm	6 Jun 2006	Iwir20	100188
14.3 cm	6 Jun 2006	Iwir25	100984
14.2 cm	6 Jun 2006	Iwir25	100984
14.2 cm	6 Jun 2006	Iwir25	100984
14.2 cm	6 Jun 2006	Iwir25	100984
14.2 cm	7 Jul 2003	Iwir20	76330

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
Iwir20	7 Jul 2003	7 May 2014	5
Iwir10	1 Jul 2004	26 Sept 2008	4
Iwir25	7 Jun 2005	6 Jun 2006	2
Iwir15	1 Jul 2004	5 Jun 2006	3

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

2003–2014

Survey records by year

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

103

304

405

406

007

108

009

010

011

012

013

114

Fish measured by surveyors

Measured length distribution

See how the 614 measured fish were spread across different length ranges.

Smallest: 4 cm
Lower quarter: 5.6 cm
Median: 8.2 cm
Upper quarter: 10.9 cm
Largest: 16.2 cm

0–99 mm

370

100–199 mm

244

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Irwell

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

Brown / sea trout Bullhead Minnow Stone loach 3-spined stickleback Chub

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 →