RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Beaulieu

Largest measured 3-spined stickleback: 4.6 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Beaulieu was 4.6 cm, recorded at Matley Passage on 3 August 2010.

Across 8 measured 3-spined stickleback, the median measured length was 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 Beaulieu.

See 3-spined stickleback records across England →

Most recent observation8 August 2025u/s Ashurst Lodge · 1 fish
Largest measured 3-spined stickleback
4.6 cm
Median length
4 cm
Fish measured
8
Survey locations
14

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
4.6 cm3 Aug 2010Matley Passage123895
4.4 cm3 Aug 2010Matley Passage123895
4 cm22 Aug 2011Matley Passage127510
4 cm3 Aug 2010Matley Passage123895
4 cm1 Aug 2006Ipley Bridge101676
3.7 cm25 Sept 2009Buck Hill120047
2.9 cm25 Sept 2009Buck Hill120047
2.8 cm25 Sept 2009Buck Hill120047

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
u/s Ashurst Lodge1 Jul 20198 Aug 20253
Deerleap Inclosure15 Jul 20138 Aug 20253
Upper Shepton Water31 Aug 200723 Jul 20254
Longdown Inclosure Tributary16 Jul 201323 Jul 20253
Holmhill Passage2 Jul 201923 Jul 20252
Mallard Wood7 Sept 200722 Jul 20255
Longwater lawn7 Sept 200722 Jul 20253
Dunce's Arch7 Sept 200722 Jul 20254
Withycombe Shade15 Jul 20133 Jul 20243
Matley Passage4 Sept 20072 Jul 20198
d/s Holmhill Passage15 Aug 201715 Aug 20171
Buck Hill25 Sept 200925 Sept 20091
Fulliford Bog6 Sept 20076 Sept 20071
Ipley Bridge4 Sept 20011 Aug 20062

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

2001–2025

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 8 measured fish were spread across different length ranges.

Smallest
2.8 cm
Lower quarter
3.5 cm
Median
4 cm
Upper quarter
4.1 cm
Largest
4.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Beaulieu

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

Brown / sea trout Stone loach Minnow Bullhead Brook lamprey 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 →