RiverFish

Dace · Leuciscus leuciscus

Dace in the River Mimram

Largest measured dace: 25.6 cm

The largest dace measured in Environment Agency surveys of the River Mimram was 25.6 cm, recorded at Panshanger quarry on 21 September 2010.

Across 148 measured dace, the median measured length was 18.7 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 Mimram.

See dace records across England →

Most recent observation2 September 2025Panshanger quarry · 3 fish
Largest measured dace
25.6 cm
Median length
18.7 cm
Fish measured
148
Survey locations
3

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 Sept 2010Panshanger quarry123962
25.3 cm1 May 2014Chandlers End, Mill Farm140726
25 cm8 Oct 2008Panshanger quarry115421
25 cm13 Sept 2007Panshanger quarry106723
24.7 cm1 May 2014Chandlers End, Mill Farm140726
24.1 cm13 Sept 2007Panshanger quarry106723
24 cm4 Sept 2009Panshanger quarry118825
24 cm13 Sept 2007Panshanger quarry106723
23.5 cm1 May 2014Chandlers End, Mill Farm140726
22.9 cm13 Sept 2007Panshanger quarry106723

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
Panshanger quarry13 Sept 20072 Sept 20259
Chandlers End, Mill Farm1 May 20141 May 20141
School/corn mill13 Jun 200613 Jun 20061

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

2006–2025

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 148 measured fish were spread across different length ranges.

Smallest
11 cm
Lower quarter
17.5 cm
Median
18.7 cm
Upper quarter
20.2 cm
Largest
25.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Mimram

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

Bullhead Brown / sea trout Stone loach 3-spined stickleback Minnow 10-spined stickleback

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 →