Dace · Leuciscus leuciscus

Dace in the Sandon Brook (Main Reaches)

Largest measured dace: 25.8 cm

The largest dace measured in Environment Agency surveys of the Sandon Brook (Main Reaches) was 25.8 cm, recorded at Danbury Road FGS on 16 May 1986.

Across 1,619 measured dace, the median measured length was 13.5 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Sandon Brook (Main Reaches).

See dace records across England →

Most recent observation9 May 2025Boreham Bridge (Sandon Brook) · 4 fish

Largest measured dace: 25.8 cm
Median length: 13.5 cm
Fish measured: 1,619
Survey locations: 4

Individual EA measurements

Largest measured dace

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
25.8 cm	16 May 1986	Danbury Road FGS	14485
25.5 cm	2 May 1989	Danbury Road FGS	14489
25.5 cm	13 May 1986	Baddow Fruit Farm	14483
25.3 cm	16 May 1986	Danbury Road FGS	14485
25.1 cm	27 Apr 1989	Graces Walk	14488
24.8 cm	13 May 1986	Baddow Fruit Farm	14483
24.7 cm	26 Apr 1989	Baddow Fruit Farm	14487
24.7 cm	13 May 1986	Baddow Fruit Farm	14483
24.5 cm	2 May 1989	Danbury Road FGS	14489
24.5 cm	13 May 1986	Baddow Fruit Farm	14483

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 surveyed	First recorded	Last recorded	Visits finding dace
Boreham Bridge (Sandon Brook)	9 May 1986	9 May 2025	9
Graces Walk	15 May 1986	8 May 2025	10
Baddow Fruit Farm	13 May 1986	21 May 1998	5
Danbury Road FGS	16 May 1986	3 May 1995	4

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

1986–2025

Survey records by year

Each bar shows how many survey visits recorded dace that year.

486

087

088

489

090

091

492

093

094

495

096

097

398

099

000

201

002

003

004

005

006

207

008

009

010

011

012

213

014

015

016

017

018

119

020

021

022

023

024

225

Fish measured by surveyors

Measured length distribution

See how the 1,619 measured fish were spread across different length ranges.

Smallest: 3.9 cm
Lower quarter: 10.9 cm
Median: 13.5 cm
Upper quarter: 16 cm
Largest: 25.8 cm

0–99 mm

284

100–199 mm

1217

200–299 mm

118

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Sandon Brook (Main Reaches)

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

Chub European eel Roach Pike Gudgeon Minnow

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 →