3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Belstead Brook

Largest measured 3-spined stickleback: 6.1 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Belstead Brook was 6.1 cm, recorded at Alder Carr on 21 May 2004.

Across 187 measured 3-spined stickleback, the median measured length was 4.2 cm.

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

See 3-spined stickleback records across England →

Most recent observation15 March 2016Alder Carr · 22 fish

Largest measured 3-spined stickleback: 6.1 cm
Median length: 4.2 cm
Fish measured: 187
Survey locations: 3

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
6.1 cm	21 May 2004	Alder Carr	84176
6.1 cm	17 Mar 1994	Water Works Bend (Belstead Brook)	4150
6.1 cm	17 Mar 1994	Water Works Bend (Belstead Brook)	4150
5.7 cm	15 Mar 2016	Alder Carr	147917
5.5 cm	15 Mar 2016	Alder Carr	147917
5.5 cm	21 May 2004	Alder Carr	84176
5.5 cm	21 May 2004	Alder Carr	84176
5.5 cm	17 Mar 1994	Water Works Bend (Belstead Brook)	4150
5.5 cm	17 Mar 1994	Water Works Bend (Belstead Brook)	4150
5.4 cm	15 Mar 2016	Alder Carr	147917

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
Alder Carr	21 Mar 1994	15 Mar 2016	4
Belstead House	18 Mar 1994	21 May 2010	3
Water Works Bend (Belstead Brook)	28 Mar 1989	17 Mar 1994	2

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

1989–2016

Survey records by year

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

189

090

091

092

093

394

095

096

097

098

099

000

001

002

003

204

005

006

007

008

009

210

011

012

013

014

015

116

Fish measured by surveyors

Measured length distribution

See how the 187 measured fish were spread across different length ranges.

Smallest: 2.1 cm
Lower quarter: 3.8 cm
Median: 4.2 cm
Upper quarter: 4.5 cm
Largest: 6.1 cm

0–99 mm

187

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Belstead Brook

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

Brown / sea trout Stone loach European eel

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 →