Minnow · Phoxinus phoxinus

Minnow in the Sandon Brook (Main Reaches)

Largest measured minnow: 9 cm

The largest minnow measured in Environment Agency surveys of the Sandon Brook (Main Reaches) was 9 cm, recorded at Graces Walk on 10 May 2013.

Across 568 measured minnow, the median measured length was 5.4 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 minnow records across England →

Most recent observation8 May 2025Graces Walk · 236 fish

Largest measured minnow: 9 cm
Median length: 5.4 cm
Fish measured: 568
Survey locations: 4

Individual EA measurements

Largest measured minnow

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
9 cm	10 May 2013	Graces Walk	137520
8.6 cm	8 May 2025	Graces Walk	177233
8.1 cm	8 May 2025	Graces Walk	177233
8.1 cm	10 May 2013	Graces Walk	137520
8.1 cm	10 May 2013	Graces Walk	137520
8.1 cm	22 May 1998	Graces Walk	14500
8.1 cm	25 Apr 1989	Boreham Bridge (Sandon Brook)	14486
8 cm	8 May 2025	Graces Walk	177233
7.9 cm	8 May 2025	Graces Walk	177233
7.9 cm	2 May 1995	Graces Walk	14496

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where minnow were found

Each point marks a survey location with at least one minnow 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 minnow
Graces Walk	15 May 1986	8 May 2025	10
Danbury Road FGS	11 May 1992	29 May 2001	3
Baddow Fruit Farm	13 May 1986	21 May 1998	5
Boreham Bridge (Sandon Brook)	9 May 1986	20 May 1998	3

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 minnow that year.

386

087

088

389

090

091

392

093

094

295

096

097

498

099

000

201

002

003

004

005

006

107

008

009

010

011

012

113

014

015

016

017

018

119

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 568 measured fish were spread across different length ranges.

Smallest: 2.4 cm
Lower quarter: 4.2 cm
Median: 5.4 cm
Upper quarter: 6.1 cm
Largest: 9 cm

0–99 mm

568

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 Dace Pike Gudgeon

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 →