RiverFish

Dace · Leuciscus leuciscus

Dace in the River Thame

Largest measured dace: 23.1 cm

The largest dace measured in Environment Agency surveys of the River Thame was 23.1 cm, recorded at Old Crendon Road Bridge on 29 September 2005.

Across 3,582 measured dace, the median measured length was 10.4 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 Thame.

See dace records across England →

Most recent observation18 September 2025D/s Bear Brook · 26 fish
Largest measured dace
23.1 cm
Median length
10.4 cm
Fish measured
3,582
Survey locations
20

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
23.1 cm29 Sept 2005Old Crendon Road Bridge86602
23 cm21 Aug 2019Shabbington (West Arm)155494
22.8 cm9 Sept 2009Old Crendon Road Bridge118945
22.5 cm24 Aug 2017Old Crendon Road Bridge151307
22.5 cm23 Aug 2016Shabbington (West Arm)149144
22.5 cm2 Sept 2009Waterstock Mill120317
22.4 cm4 Sept 2003Old Crendon Road Bridge76929
22.1 cm21 Aug 2019Shabbington (West Arm)155494
22.1 cm20 Aug 2002Shabbington (West Arm)73226
22 cm27 Aug 2013Shabbington (West Arm)138257

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
D/s Bear Brook11 Sept 200318 Sept 20255
Dorchester Road Bridge14 Oct 200317 Sept 202512
Chiselhampton18 Sept 200317 Sept 202512
Waterstock Mill20 Sept 200416 Sept 202511
Cuddesdon19 Sept 200316 Sept 202512
Ickford Bridge3 Sept 200311 Sept 202513
Old Crendon Road Bridge4 Sept 20039 Sept 202512
Nether Winchendon - Lower Riffle5 Aug 200228 Aug 202512
Upstream of Notley Abbey20 Aug 200216 Sept 202212
Downstream Eythrope16 Aug 201613 Sept 20223
Shabbington (West Arm)20 Aug 200221 Aug 201912
Kingsey Cuttle Brook7 Sept 20109 Aug 20162
Eythrope_ByPass Channel Site Two15 Jul 20084 Aug 20143
Eythrope_Riffles Site Two16 Jul 20089 Jul 20102
Eythrope9 Sept 20038 Sept 20095
Eythrope_Riffles Site Three17 Jul 200817 Jul 20081
Eythrope_Riffles Site One16 Jul 200816 Jul 20081
Eythrope_ByPass Channel Site One15 Jul 200815 Jul 20081
Eythrope_Historic Channel Site One14 Jul 200814 Jul 20081
Nether Winchendon - Original Enhancement5 Aug 200210 Sept 20032

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

2002–2025

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 3,582 measured fish were spread across different length ranges.

Smallest
2.5 cm
Lower quarter
7.7 cm
Median
10.5 cm
Upper quarter
13.6 cm
Largest
23.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Thame

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

Chub Roach Gudgeon Perch Pike Bleak

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 →