RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Glaven

Largest measured 3-spined stickleback: 7.2 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Glaven was 7.2 cm, recorded at Upstream Glandford Mill on 14 June 2017.

Across 1,135 measured 3-spined stickleback, the median measured length was 4.4 cm.

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

See 3-spined stickleback records across England →

Most recent observation16 June 2026Upstream Glandford Mill · 5 fish
Largest measured 3-spined stickleback
7.2 cm
Median length
4.4 cm
Fish measured
1,135
Survey locations
13

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.

LengthSurvey dateSurvey locationSurvey ID
7.2 cm14 Jun 2017Upstream Glandford Mill151957
6.8 cm14 Jun 2017Upstream Glandford Mill151957
6.8 cm5 Jun 2014Hunworth Rail Bridge U/s141519
6.6 cm5 Jun 2014Hunworth Rail Bridge U/s141519
6.6 cm1 Jun 2011Thornage Bridge127611
6.6 cm22 Jan 1988Upstream Wiveton Bridge16839
6.5 cm1 Jun 2017Thornage Bridge151538
6.5 cm27 Feb 2009D/s Hunworth railway bridge117281
6.5 cm5 Apr 1991Hunworth16840
6.4 cm3 Jun 2014D/s Hunworth railway bridge141515

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 surveyedFirst recordedLast recordedVisits finding 3-spined stickleback
Upstream Glandford Mill18 Mar 199116 Jun 20266
Letheringsett18 Jan 198821 May 20269
Upstream Thornage Ford4 Apr 199116 May 20258
D/s Hunworth railway bridge12 Jan 19887 May 202517
Upstream Wiveton Bridge22 Jan 198811 Jul 20234
Thornage Bridge26 Mar 19918 Jun 20237
Hempstead Mill bridge5 Dec 20145 Dec 20141
Hunworth Rail Bridge U/s5 Mar 20095 Jun 20147
Bodham Pine Farm24 Jan 200311 Mar 20112
Bodham School Loke24 Jan 200324 Jan 20031
Selbrigg Lake outflow23 Jan 200323 Jan 20031
Bodham Harts Lane23 Jan 200323 Jan 20031
Hunworth11 Jan 198823 Mar 19943

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

1988–2026

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 1,135 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
3.9 cm
Median
4.4 cm
Upper quarter
4.9 cm
Largest
7.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Glaven

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

Bullhead European eel Brook lamprey Pike Perch Roach

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 →