3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Earlswood Brook

Largest measured 3-spined stickleback: 7.1 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Earlswood Brook was 7.1 cm, recorded at Upstream Swt on 21 April 2023.

Across 9 measured 3-spined stickleback, the median measured length was 5.6 cm.

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

See 3-spined stickleback records across England →

Most recent observation21 April 2023Upstream Swt · 7 fish

Largest measured 3-spined stickleback: 7.1 cm
Median length: 5.6 cm
Fish measured: 9
Survey locations: 4

Individual EA measurements

Largest measured 3-spined stickleback

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
7.1 cm	21 Apr 2023	Upstream Swt	162383
7 cm	21 Apr 2023	Upstream Swt	162383
6.4 cm	20 Nov 2008	Lonesome Lane Earlswood	116448
6 cm	21 Apr 2023	Upstream Swt	162383
5.6 cm	21 Apr 2023	Upstream Swt	162383
5.3 cm	21 Apr 2023	Upstream Swt	162383
4.9 cm	20 Nov 2008	Lonesome Lane Earlswood	116448
4.5 cm	21 Apr 2023	Upstream Swt	162383
4.5 cm	21 Apr 2023	Upstream Swt	162383

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

Explore the river

Where 3-spined stickleback were found

Each point marks a survey location with at least one 3-spined stickleback 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 3-spined stickleback
Upstream Swt	21 Apr 2023	21 Apr 2023	1
Lonesome Lane Earlswood	21 Jan 1992	20 Nov 2008	2
Dovers Farm	23 Jan 1992	23 Jan 1992	1
Newpond Farm	21 Jan 1992	21 Jan 1992	1

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

1992–2023

Survey records by year

Each bar shows how many survey visits recorded 3-spined stickleback that year.

392

093

094

095

096

097

098

099

000

001

002

003

004

005

006

007

108

009

010

011

012

013

014

015

016

017

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 9 measured fish were spread across different length ranges.

Smallest: 4.5 cm
Lower quarter: 4.9 cm
Median: 5.6 cm
Upper quarter: 6.4 cm
Largest: 7.1 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Earlswood Brook

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

Perch Stone loach 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 →