RiverFish

Dace · Leuciscus leuciscus

Dace in the River Ouse

Largest measured dace: 20.8 cm

The largest dace measured in Environment Agency surveys of the River Ouse was 20.8 cm, recorded at Naburn Weir (single anode) on 22 July 1996.

Across 2,758 measured dace, the median measured length was 5.6 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 Ouse.

See dace records across England →

Most recent observation22 June 2026Naburn Weir (single anode) · 17 fish
Largest measured dace
20.8 cm
Median length
5.6 cm
Fish measured
2,758
Survey locations
17

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
20.8 cm22 Jul 1996Naburn Weir (single anode)109453
19.1 cm22 Jul 1996Naburn Weir (single anode)109453
18.9 cm22 Jul 1996Naburn Weir (gill net)109506
18.2 cm17 Jul 2014Linton-on-Ouse, below weir (single anode)141919
18.2 cm22 Jul 1996Naburn Weir (boom boat site)109504
18 cm22 Jul 1996Naburn Weir (boom boat site)109504
17.9 cm22 Jul 1996Naburn Weir (boom boat site)109504
17.5 cm17 Jul 2000Linton-on-Ouse, below weir (single anode)107363
17.4 cm22 Jul 1996Naburn Weir (single anode)109453
17.1 cm17 Jul 2014Linton-on-Ouse, below weir (single anode)141919

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
Naburn Weir (single anode)22 Jul 199622 Jun 202621
Naburn - Fry Survey25 Sept 20037 Aug 202510
Acaster - Fry Survey24 Sept 19857 Aug 202520
Linton-on-Ouse, below weir (single anode)25 Jul 19963 Jul 202522
Beningbrough Village (single anode)5 Aug 19972 Jul 202522
Linton-on-Ouse u/s weir (single anode)1 Aug 199730 Jun 202513
Acaster Malbis (single anode)26 Jul 199628 Jun 20227
Linton weir - u/s - Fry Survey29 Sept 199830 Aug 20122
Beningborough - Fry Survey20 Sept 19841 Sept 200915
Nether Poppleton (single anode)18 Jul 20015 Jul 20054
Beningbrough Village (boom boat site)12 Jul 200212 Jul 20021
Linton-on-Ouse u/s weir (boom boat)11 Jul 200211 Jul 20021
Beningbrough Village (seine net site)23 Jul 199917 Jul 20013
Naburn Weir (boom boat site)22 Jul 199621 Jul 20003
Linton-on-Ouse u/s (seine netting site)23 Jul 199617 Jul 20002
Naburn Weir (gill net)22 Jul 199622 Jul 19961
Nether Poppleton (boom boat)18 Jul 199618 Jul 19961

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

1984–2026

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 2,758 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
4.3 cm
Median
5.6 cm
Upper quarter
8 cm
Largest
20.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ouse

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

Roach Perch Gudgeon Ruffe Bleak 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 →