RiverFish

Dace · Leuciscus leuciscus

Dace in the River Thames

Largest measured dace: 25.6 cm

The largest dace measured in Environment Agency surveys of the River Thames was 25.6 cm, recorded at Abingdon - Culham (Margin) on 21 July 2019.

Across 10,434 measured dace, the median measured length was 10.2 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 Thames.

See dace records across England →

Most recent observation16 October 2025Hannington Bridge · 17 fish
Largest measured dace
25.6 cm
Median length
10.2 cm
Fish measured
10,434
Survey locations
73

Individual EA measurements

Largest measured dace

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

LengthSurvey dateSurvey locationSurvey ID
25.6 cm21 Jul 2019Abingdon - Culham (Margin)155303
25.2 cm27 Jul 2022Hambleden - Hurley (margin)162071
25.2 cm21 Jul 2004Hambleden - Hurley (margin)80562
25 cm25 Jul 2011Hambleden - Hurley (margin)127280
25 cm24 Jul 2010Hambleden - Hurley (margin)123241
24.9 cm21 Jul 2004Hambleden - Hurley (margin)80562
24.8 cm21 Jul 2005Hambleden - Hurley (margin)85801
24.5 cm24 Jul 2001Hambleden - Hurley (margin)89030
24.3 cm21 Jul 2004Hambleden - Hurley (margin)80562
24 cm21 Jul 2005Hambleden - Hurley (margin)85801

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

Explore the river

Where dace were found

Each point marks a survey location with at least one dace 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 dace
Hannington Bridge29 Aug 200316 Oct 202512
Castle Eaton23 May 200216 Oct 202515
Cricklade23 May 200214 Oct 202514
Eynsham- kings1 Oct 200326 Sept 202514
Northmoor- Pinkhill26 Sept 200325 Sept 202515
Rushey to Shifford7 Jun 200124 Sept 202518
Buscot to Grafton5 Jun 200123 Sept 202516
Roundhouse to St Johns(margins)26 Jun 200222 Sept 202519
Hambleden - Hurley (margin)24 Jul 200125 Jul 202517
Hambleden - Hurley (Weirpool)23 Jul 200325 Jul 202512
Shiplake-marsh - (Margin)24 Jul 200224 Jul 202515
Shiplake - Marsh (Weirpool)20 Jul 200424 Jul 20259
Caversham-sonning - (Margin)17 Jul 200123 Jul 202516
Caversham (Weirpool)17 Jul 200323 Jul 20258
Whitchurch to Mapledurham (Margin)12 Jul 200122 Jul 202517
Whitchurch (Weirpool)12 Jul 200122 Jul 202516
Cleeve-Goring - (Margin)19 Jul 200621 Jul 20258
Cleeve - Goring (Weirpool)15 Jul 200321 Jul 20255
Days - Benson (Margin)24 Sept 199320 Jul 202526
Clifton Weir Stream10 Jul 200919 Jul 20259
Clifton Hampden - Days (Margin)23 Sept 199319 Jul 202525
Culham Weirpool15 Jul 201018 Jul 202510
Culham - Clifton Hampden (Margin)22 Sept 199318 Jul 202525
Abingdon Weirpool14 Jul 201015 Jul 202511
Abingdon - Culham (Margin)21 Sept 199315 Jul 202527
Sandford Weir stream7 Jul 200910 Jul 20257
Sandford - Abingdon - (Margin)20 Sept 199310 Jul 202521
Iffley - Sandford (Margin)12 Jul 20109 Jul 20259
Godstow to Osney19 Jun 200120 Sept 202415
Days weirpool11 Jul 200914 Jul 20249
Godstow Weirpool23 Oct 201329 Sept 20239
Shifford Fish Pass2 Nov 20222 Nov 20221
Water eaton2 Oct 200218 Oct 202213
Port Meadow (Day/Night)22 Jun 201816 Jul 20196
Canal confluence to Marina22 Jun 201815 Jul 20195
Sutton Pools7 Oct 20147 Oct 20141
Rushey bypass channel18 Sept 201418 Sept 20141
Mapledurham Mill Channel16 Apr 201416 Apr 20141
Shifford Lock Cut18 Oct 201318 Oct 20131
Radcot - Rushey17 Oct 201317 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
Goring to Whitchurch (Margin)20 Jul 20089 Jul 20136
Benson Weirpool26 Jul 20127 Jul 20132
u/s of Waterhay Bridge15 May 201315 May 20131
Cerney Wick Brook31 Mar 200410 Apr 20132
Rushey Weir Pool12 Oct 200425 Oct 20116
Sonning Weir17 Jul 200923 Jul 20112
Buscot weir pool21 Oct 20085 Oct 20103
Sonning Weirstream22 Jul 201022 Jul 20101
Northmoor Wier pool23 Oct 200823 Oct 20081
Marsh - Hambleden (Margin)24 Jul 200824 Jul 20081
Loddon - Confluence to St Pats Stream24 Jul 200824 Jul 20081
Shifford to Newbridge - Windrush Confluence23 Oct 200723 Oct 20071
Eynsham Weir Stream17 Mar 20067 Sept 20073
Port Meadow1 Sept 20071 Sept 20071
Donnington Bridge1 Sept 20071 Sept 20071
St Patricks stream16 Nov 200616 Nov 20061
Godstow weirstream1 Oct 200326 Sept 20052
Abingdon - Culham (Middle)21 Sept 19936 Jul 20054
Clifton Hampden - Days (Middle)23 Sept 199310 Jul 200410
Eynsham weirpool1 Oct 20031 Oct 20031
Days - Benson (Middle)24 Sept 19937 Jul 20036
Culham - Clifton Hampden (Middle)22 Sept 19935 Jun 20037
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
Whitchurch - Mapledurham (Middle)12 Jul 200118 Jul 20022
Sandford - Abingdon - Middle20 Sept 19936 Jul 20026
Roundhouse to St Johns(mid-river)26 Jun 200226 Jun 20021
Caversham-sonning - (Mid River)17 Jul 200117 Jul 20011

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 dace that year.

Fish measured by surveyors

Measured length distribution

See how the 10,434 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
7 cm
Median
10.2 cm
Upper quarter
13.9 cm
Largest
25.6 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 Chub Perch 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 →