RiverFish

Dace · Leuciscus leuciscus

Dace in the River Ouzel

Largest measured dace: 27.3 cm

The largest dace measured in Environment Agency surveys of the River Ouzel was 27.3 cm, recorded at Billington on 16 December 1994.

Across 3,119 measured dace, the median measured length was 12 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 Ouzel.

See dace records across England →

Most recent observation16 April 2026DS Caldecote Mill · 1 fish
Largest measured dace
27.3 cm
Median length
12 cm
Fish measured
3,119
Survey locations
15

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
27.3 cm16 Dec 1994Billington29050
27.3 cm28 Oct 1986Manor Sports Field29040
26.8 cm16 Dec 1994Billington29050
26.8 cm28 Oct 1986Manor Sports Field29040
26.3 cm28 Oct 1986Manor Sports Field29040
26.3 cm28 Oct 1986Manor Sports Field29040
26.3 cm28 Oct 1986Manor Sports Field29040
25.3 cm28 Oct 1986Manor Sports Field29040
25.3 cm28 Oct 1986Manor Sports Field29040
24.8 cm28 Oct 1986Manor Sports Field29040

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
DS Caldecote Mill17 Jun 201316 Apr 20264
Newport Pagnell7 Nov 19907 Aug 20257
Manor Sports Field28 Oct 198631 Jul 202517
Open University4 Jan 199510 Jul 201914
Leighton Buzzard16 Nov 19908 Jul 201915
US Open University3 Sept 20146 Oct 20174
US Leighton Buzzard21 Mar 201621 Mar 20161
US Billington12 Apr 200718 Jun 20132
Eton Bray24 May 201324 May 20131
Caldecote Mill6 Nov 199012 May 201012
Castle Meadow22 Nov 199030 Apr 200911
M1 Road Bridge8 Nov 19902 Apr 20044
Simpson Ouzel21 Nov 199029 Mar 20044
Stoke Hammond5 Dec 199724 Mar 20042
Billington15 Nov 199026 Nov 19973

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

1986–2026

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 3,119 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
9 cm
Median
12 cm
Upper quarter
14.8 cm
Largest
27.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ouzel

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

Gudgeon Perch Roach Bullhead Minnow Pike

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 →