3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Itchen

Largest measured 3-spined stickleback: 4.5 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Itchen was 4.5 cm, recorded at Long Itchington on 23 August 2016.

Across 24 measured 3-spined stickleback, the median measured length was 3 cm.

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

See 3-spined stickleback records across England →

Most recent observation17 May 2023Long Itchington

Largest measured 3-spined stickleback: 4.5 cm
Median length: 3 cm
Fish measured: 24
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
4.5 cm	23 Aug 2016	Long Itchington	149395
4.5 cm	21 Oct 1997	Knightcote	80965
4 cm	21 Oct 1997	Knightcote	80965
3.8 cm	23 Aug 2016	Long Itchington	149395
3.7 cm	23 Aug 2016	Long Itchington	149395
3.5 cm	23 Aug 2016	Long Itchington	149395
3.5 cm	23 Aug 2016	Long Itchington	149395
3.3 cm	23 Aug 2016	Long Itchington	149395
3.3 cm	23 Aug 2016	Long Itchington	149395
3.2 cm	23 Aug 2016	Long Itchington	149395

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
Long Itchington	6 Nov 1986	17 May 2023	6
Snowford Bridge	23 Sept 2008	23 Sept 2008	1
Knightcote	28 Jun 1993	21 Oct 1997	2
Bishops Itchington	6 Nov 1986	6 Nov 1986	1

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

1986–2023

Survey records by year

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

286

087

088

089

090

091

092

193

094

095

096

197

098

099

000

001

002

003

004

005

006

007

108

009

110

011

012

013

014

015

116

017

118

119

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 24 measured fish were spread across different length ranges.

Smallest: 1.9 cm
Lower quarter: 2.6 cm
Median: 3.1 cm
Upper quarter: 3.5 cm
Largest: 4.5 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Itchen

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

Pike Stone loach Bullhead Minnow Dace Chub

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 →