RiverFish

Dace · Leuciscus leuciscus

Dace in the River Monkey island

Largest measured dace: 20.4 cm

The largest dace measured in Environment Agency surveys of the River Monkey island was 20.4 cm, recorded at Monkey Island Upstream Fry on 21 August 2003.

Across 633 measured dace, the median measured length was 4.7 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 Monkey island.

See dace records across England →

Most recent observation4 September 2025Monkey Island Upstream Fry · 1 fish
Largest measured dace
20.4 cm
Median length
4.7 cm
Fish measured
633
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
20.4 cm21 Aug 2003Monkey Island Upstream Fry117041
18.6 cm21 Aug 2003Monkey Island Upstream Fry117041
18.6 cm21 Aug 2003Monkey Island Upstream Fry117041
18.3 cm20 Aug 2018Monkey Island Downstream Fry153439
17.1 cm19 Aug 2014Monkey Island Upstream Fry142436
16.9 cm21 Aug 2003Monkey Island Upstream Fry117041
16.7 cm18 Aug 2015Monkey Island Upstream Fry146040
16.5 cm21 Aug 2003Monkey Island Upstream Fry117041
16.2 cm21 Aug 2003Monkey Island Upstream Fry117041
16.2 cm21 Aug 2003Monkey Island Upstream Fry117041

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
Monkey Island Upstream Fry21 Aug 20034 Sept 202512
Monkey Island Downstream Fry21 Aug 20034 Sept 202513

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 633 measured fish were spread across different length ranges.

Smallest
1.7 cm
Lower quarter
3.6 cm
Median
4.7 cm
Upper quarter
6.1 cm
Largest
20.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Monkey island

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

Perch Chub Roach Gudgeon Minnow 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 →