RiverFish

Dace · Leuciscus leuciscus

Dace in the River Marlow

Largest measured dace: 11.6 cm

The largest dace measured in Environment Agency surveys of the River Marlow was 11.6 cm, recorded at Marlow Downstream Fry on 22 August 2012.

Across 519 measured dace, the median measured length was 4.9 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 Marlow.

See dace records across England →

Most recent observation4 September 2025Marlow Downstream Fry · 2 fish
Largest measured dace
11.6 cm
Median length
4.9 cm
Fish measured
519
Survey locations
2

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
11.6 cm22 Aug 2012Marlow Downstream Fry135306
11.1 cm22 Aug 2012Marlow Downstream Fry135306
10.9 cm22 Aug 2012Marlow Downstream Fry135306
10.7 cm26 Aug 2003Marlow Upstream Fry116981
10.5 cm22 Aug 2012Marlow Downstream Fry135306
9.8 cm30 Aug 2005Marlow Upstream Fry111660
9.6 cm22 Aug 2012Marlow Downstream Fry135306
9.2 cm22 Aug 2012Marlow Downstream Fry135306
8.8 cm30 Aug 2005Marlow Upstream Fry111660
8.6 cm29 Aug 2013Marlow Downstream Fry138580

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
Marlow Downstream Fry26 Aug 20034 Sept 202513
Marlow Upstream Fry26 Aug 20031 Sept 202311

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

2003–2025

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 519 measured fish were spread across different length ranges.

Smallest
1.8 cm
Lower quarter
3.4 cm
Median
4.9 cm
Upper quarter
5.6 cm
Largest
11.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Marlow

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

Minnow Gudgeon Chub Roach Bleak Perch

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 →