3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Bonesgate at Ewell

Largest measured 3-spined stickleback: 8.4 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Bonesgate at Ewell was 8.4 cm, recorded at Impact - Upstream on 23 February 2011.

Across 300 measured 3-spined stickleback, the median measured length was 4.2 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 Bonesgate at Ewell.

See 3-spined stickleback records across England →

Most recent observation23 February 2011Control - Upstream · 23 fish

Largest measured 3-spined stickleback: 8.4 cm
Median length: 4.2 cm
Fish measured: 300
Survey locations: 6

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
8.4 cm	23 Feb 2011	Impact - Upstream	125946
7.7 cm	23 Feb 2011	Control - Upstream	125949
7.2 cm	23 Feb 2011	Control - Upstream	125949
7.2 cm	12 Feb 2008	Impact - Middle	109796
7.1 cm	12 Feb 2008	Control - Downstream	109790
6.8 cm	23 Feb 2011	Impact - Middle	125945
6.8 cm	12 Feb 2008	Impact - Middle	109796
6.7 cm	23 Feb 2011	Control - Downstream	125947
6.7 cm	23 Feb 2011	Impact - Upstream	125946
6.6 cm	23 Feb 2011	Control - Downstream	125947

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
Impact - Upstream	12 Feb 2008	23 Feb 2011	2
Impact - Middle	12 Feb 2008	23 Feb 2011	2
Impact - Downstream	12 Feb 2008	23 Feb 2011	2
Control - Upstream	12 Feb 2008	23 Feb 2011	2
Control - Middle	12 Feb 2008	23 Feb 2011	2
Control - Downstream	12 Feb 2008	23 Feb 2011	2

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

2008–2011

Survey records by year

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

608

009

010

611

Fish measured by surveyors

Measured length distribution

See how the 300 measured fish were spread across different length ranges.

Smallest: 2.1 cm
Lower quarter: 3.6 cm
Median: 4.2 cm
Upper quarter: 5.2 cm
Largest: 8.4 cm

0–99 mm

300

Lengths are direct survey measurements rather than anglers’ catches.

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 →