3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Streams to Humber

Largest measured 3-spined stickleback: 7.5 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Streams to Humber was 7.5 cm, recorded at Pool Beck on 16 October 2007.

Across 293 measured 3-spined stickleback, the median measured length was 4.5 cm.

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

See 3-spined stickleback records across England →

Most recent observation2 June 2025Sand Bridge, Mires Beck, nr Ellerker FOULNES4

Largest measured 3-spined stickleback: 7.5 cm
Median length: 4.5 cm
Fish measured: 293
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
7.5 cm	16 Oct 2007	Pool Beck	108608
7.5 cm	16 Oct 2007	Pool Beck	108608
7.1 cm	3 Jun 2015	Sand Bridge, Mires Beck, nr Ellerker FOULNES4	144859
7.1 cm	26 Aug 2010	Sand Bridge, Mires Beck, nr Ellerker FOULNES4	124073
7 cm	16 Oct 2007	Pool Beck	108608
6.7 cm	16 Oct 2007	Sand Bridge, Mires Beck, nr Ellerker FOULNES4	108651
6.6 cm	3 Jun 2015	Sand Bridge, Mires Beck, nr Ellerker FOULNES4	144859
6.6 cm	9 Sept 2008	Pool Beck	115806
6.5 cm	3 Jun 2015	Sand Bridge, Mires Beck, nr Ellerker FOULNES4	144859
6.5 cm	3 Jun 2015	Sand Bridge, Mires Beck, nr Ellerker FOULNES4	144859

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
Sand Bridge, Mires Beck, nr Ellerker FOULNES4	10 Oct 2002	2 Jun 2025	11
Beckside Farm, Mill Beck FOULNES3	10 Oct 2002	14 Jun 2023	7
Pool Beck	16 Oct 2007	8 Jun 2011	3

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

2002–2025

Survey records by year

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

202

103

104

105

006

207

208

009

110

111

012

013

214

215

216

017

018

019

020

221

022

123

024

125

Fish measured by surveyors

Measured length distribution

See how the 293 measured fish were spread across different length ranges.

Smallest: 1.4 cm
Lower quarter: 3.6 cm
Median: 4.5 cm
Upper quarter: 5.4 cm
Largest: 7.5 cm

0–99 mm

293

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Streams to Humber

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

European eel Stone loach Roach Brown / sea trout Flounder Bullhead

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 →