RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Boulters Weir Stream

Largest measured 3-spined stickleback: 3.8 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Boulters Weir Stream was 3.8 cm, recorded at Boulters Weir Downstream Fry on 27 August 2013.

Across 28 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 Boulters Weir Stream.

See 3-spined stickleback records across England →

Most recent observation4 September 2025Boulters Weir Downstream Fry · 4 fish
Largest measured 3-spined stickleback
3.8 cm
Median length
3 cm
Fish measured
28
Survey locations
2

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
3.8 cm27 Aug 2013Boulters Weir Downstream Fry138566
3.8 cm27 Aug 2013Boulters Weir Downstream Fry138566
3.8 cm27 Aug 2013Boulters Weir Downstream Fry138566
3.7 cm22 Aug 2017Boulters Weir Downstream Fry151486
3.6 cm27 Aug 2013Boulters Weir Downstream Fry138566
3.6 cm27 Aug 2013Boulters Weir Downstream Fry138566
3.5 cm4 Sept 2025Boulters Weir Downstream Fry178508
3.4 cm4 Sept 2025Boulters Weir Downstream Fry178508
3.4 cm27 Aug 2013Boulters Weir Downstream Fry138566
3.4 cm23 Aug 2011Boulters Weir Downstream Fry130077

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
Boulters Weir Downstream Fry23 Aug 20114 Sept 20256
Boulters Weir Upstream Fry7 Sept 200420 Aug 20183

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

2004–2025

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 28 measured fish were spread across different length ranges.

Smallest
1.9 cm
Lower quarter
2.3 cm
Median
3 cm
Upper quarter
3.4 cm
Largest
3.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Boulters Weir Stream

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

Minnow Dace Roach Bleak Chub Gudgeon

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 →