RiverFish

Chub · Leuciscus cephalus

Chub in the River Ivel

Largest measured chub: 57.5 cm

The largest chub measured in Environment Agency surveys of the River Ivel was 57.5 cm, recorded at Gt Ouse Confluence on 3 May 2005.

Across 1,608 measured chub, the median measured length was 39 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 Ivel.

See chub records across England →

Most recent observation8 October 2025Henlow · 80 fish
Largest measured chub
57.5 cm
Median length
39 cm
Fish measured
1,608
Survey locations
17

Individual EA measurements

Largest measured chub

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

LengthSurvey dateSurvey locationSurvey ID
57.5 cm3 May 2005Gt Ouse Confluence84486
54 cm29 Apr 2025Biggleswade Common176370
53.5 cm19 May 2016Gt Ouse Confluence148062
53.3 cm12 Jun 1989Gt Ouse Confluence29253
52.5 cm3 Apr 2006US Iron Bridge90598
52 cm12 May 2005Girtford Weir84561
52 cm29 Apr 2005Langford Nursery84481
51.8 cm4 Jun 2013DS Iron Bridge136221
51.6 cm16 May 2016DS Iron Bridge148035
51.5 cm29 Apr 2025Biggleswade Common176370

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where chub were found

Each point marks a survey location with at least one chub 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 chub
Henlow3 Jan 19928 Oct 202516
Girtford Weir3 Aug 199830 Apr 202512
Biggleswade Common9 Jun 198929 Apr 202516
DS Iron Bridge8 Jun 19899 Apr 202516
Gt Ouse Confluence12 Jun 198919 May 201615
Langford Mill26 Nov 200926 Nov 20091
Iron Bridge4 Apr 20064 Apr 20061
US Iron Bridge3 Apr 20063 Apr 20061
DS Biggleswade Mill3 Apr 20063 Apr 20061
Biggleswade Mill3 Apr 20063 Apr 20061
Beeston22 Jan 199119 May 20054
Broom Mill16 Jan 199217 May 20052
High Romper Bridge23 Jun 198913 May 20054
Langford Nursery6 Jan 199229 Apr 20053
Saw Mills Tempsford22 Aug 200322 Aug 20031
Sandy27 Jan 199229 Jul 19982
Astwick27 May 199827 May 19981

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

1989–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 1,608 measured fish were spread across different length ranges.

Smallest
4 cm
Lower quarter
27.8 cm
Median
39.1 cm
Upper quarter
43.5 cm
Largest
57.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ivel

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

Pike Roach Gudgeon Dace Bullhead 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 →