RiverFish

Chub · Leuciscus cephalus

Chub in the River Thames

Largest measured chub: 57.5 cm

The largest chub measured in Environment Agency surveys of the River Thames was 57.5 cm, recorded at Godstow to Osney on 26 October 2007.

Across 12,797 measured chub, the median measured length was 15.6 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 Thames.

See chub records across England →

Most recent observation16 October 2025Hannington Bridge · 26 fish
Largest measured chub
57.5 cm
Median length
15.6 cm
Fish measured
12,797
Survey locations
77

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 cm26 Oct 2007Godstow to Osney108339
55.7 cm15 Jul 2011Abingdon Weirpool127266
55 cm5 Jul 2000Clifton Hampden - Days (Margin)83071
54.5 cm6 Oct 2022Northmoor- Pinkhill162134
54.5 cm28 Sept 2017Northmoor- Pinkhill151811
54.5 cm12 Jul 2010Iffley - Sandford (Margin)123147
54.3 cm24 Sept 2025Rushey to Shifford179691
54.3 cm9 Jul 2024Iffley - Sandford (Margin)165892
54.3 cm16 Jul 2022Abingdon - Culham (Margin)162143
54.2 cm19 Sept 2024Eynsham- kings168757

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
Hannington Bridge29 Aug 200316 Oct 202512
Castle Eaton23 May 200216 Oct 202515
Cricklade23 May 200214 Oct 202514
Godstow to Osney19 Jun 200126 Sept 202519
Eynsham- kings14 Jun 200126 Sept 202518
Northmoor- Pinkhill12 Jun 200125 Sept 202518
Rushey to Shifford7 Jun 200124 Sept 202520
Buscot to Grafton5 Jun 200123 Sept 202518
Roundhouse to St Johns(margins)26 Jun 200222 Sept 202518
Hambleden - Hurley (margin)24 Jul 200125 Jul 202515
Hambleden - Hurley (Weirpool)23 Jul 200325 Jul 202513
Shiplake-marsh - (Margin)24 Jul 200224 Jul 202514
Shiplake - Marsh (Weirpool)22 Jul 200324 Jul 20258
Caversham-sonning - (Margin)17 Jul 200123 Jul 202514
Whitchurch to Mapledurham (Margin)12 Jul 200122 Jul 202517
Whitchurch (Weirpool)12 Jul 200122 Jul 202516
Cleeve-Goring - (Margin)3 Jul 200121 Jul 202515
Cleeve - Goring (Weirpool)15 Jul 200321 Jul 20257
Days weirpool18 Jul 200820 Jul 202512
Days - Benson (Margin)24 Sept 199320 Jul 202529
Clifton Weir Stream17 Jul 200819 Jul 202513
Clifton Hampden - Days (Margin)23 Sept 199319 Jul 202529
Culham Weirpool15 Jul 201018 Jul 202513
Culham - Clifton Hampden (Margin)22 Sept 199318 Jul 202529
Abingdon Weirpool8 Jul 200915 Jul 202512
Abingdon - Culham (Margin)21 Sept 199315 Jul 202527
Sandford Weir stream7 Jul 200910 Jul 20259
Sandford - Abingdon - (Margin)20 Sept 199310 Jul 202530
Iffley - Sandford (Margin)5 Jul 20019 Jul 202518
Godstow Weirpool26 Oct 201129 Sept 202310
Shifford Fish Pass2 Nov 20222 Nov 20221
Water eaton2 Oct 200218 Oct 202213
Caversham (Weirpool)21 Jul 200627 Jul 20192
Port Meadow (Day/Night)22 Jun 201816 Jul 20196
Canal confluence to Marina22 Jun 201815 Jul 20195
Days - Benson (daytime)11 Jul 201811 Jul 20181
Sutton Pools7 Oct 20147 Oct 20141
Rushey bypass channel18 Sept 201418 Sept 20141
Mapledurham Mill Channel22 Jul 200816 Apr 20142
Shifford Lock Cut18 Oct 201318 Oct 20131
Radcot - Rushey17 Oct 201317 Oct 20131
St John's Lock Cut16 Oct 201316 Oct 20131
Radcot Fish Pass25 Sept 201325 Sept 20131
Hailstone farm18 Mar 200421 Aug 20132
Sonning - shiplake (Margin)17 Jul 200912 Jul 20135
Goring weir pool20 Jul 20089 Jul 20136
Benson Weirpool26 Jul 20127 Jul 20132
u/s of Waterhay Bridge15 May 201315 May 20131
Goring to Whitchurch (Margin)20 Jul 200828 Jul 20124
Rushey Weir Pool12 Oct 200425 Oct 20117
Eynsham weirpool1 Oct 20038 Oct 20106
Buscot weir pool6 Oct 20065 Oct 20103
Northmoor Wier pool15 Oct 200915 Oct 20091
Sonning Weir17 Jul 200917 Jul 20091
Marsh - Hambleden (Margin)24 Jul 200824 Jul 20081
Loddon - Confluence to St Pats Stream24 Jul 200824 Jul 20081
Mapledurham weirpool22 Jul 200822 Jul 20081
Mapledurham - Caversham (Margin)22 Jul 200822 Jul 20081
Shifford to Newbridge - Windrush Confluence23 Oct 200723 Oct 20071
Newbridge - Windrush Confluence - to Northmoor23 Oct 200723 Oct 20071
Eynsham Weir Stream17 Mar 20067 Sept 20073
Port Meadow1 Sept 20071 Sept 20071
St Patricks stream16 Nov 200616 Nov 20061
Godstow weirstream1 Oct 200326 Sept 20052
Days - Benson (Middle)24 Sept 19939 Jul 200511
Clifton Hampden - Days (Middle)23 Sept 19938 Jul 200512
Culham - Clifton Hampden (Middle)22 Sept 19937 Jul 200512
Abingdon - Culham (Middle)21 Sept 19936 Jul 20057
Sandford - Abingdon - Middle20 Sept 19935 Jul 200512
Iffley - Sandford (Middle)5 Jul 20024 Jul 20053
Waterhay bridge18 Mar 200418 Mar 20041
400yds d/s hannington B-small trib on RB24 Sept 200224 Sept 20021
Hambleden - Hurley (middle)24 Jul 200125 Jul 20022
Shiplake-Marsh - (Mid-River)24 Jul 200224 Jul 20021
Caversham-sonning - (Mid River)17 Jul 200123 Jul 20022
Whitchurch - Mapledurham (Middle)12 Jul 200118 Jul 20022
Cleeve-Goring - (Mid River)3 Jul 200117 Jul 20022

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

1993–2025

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 12,797 measured fish were spread across different length ranges.

Smallest
1.5 cm
Lower quarter
10.3 cm
Median
15.6 cm
Upper quarter
29.8 cm
Largest
57.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Thames

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

Roach Bleak Pike Perch Dace Gudgeon

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 →