RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Gaunless

Largest measured 3-spined stickleback: 4.8 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Gaunless was 4.8 cm, recorded at River Gaunless at Spring Garden on 24 September 2008.

Across 2 measured 3-spined stickleback, the median measured length was 4.1 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 Gaunless.

See 3-spined stickleback records across England →

Most recent observation26 September 2025River Gaunless at The Slack
Largest measured 3-spined stickleback
4.8 cm
Median length
4.1 cm
Fish measured
2
Survey locations
10

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
4.8 cm24 Sept 2008River Gaunless at Spring Garden114781
3.4 cm24 Sept 2008River Gaunless at Spring Garden114781

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
River Gaunless at The Slack11 Sept 200226 Sept 20256
River Gaunless at Spring Garden24 Sept 200825 Sept 20257
River Gaunless at Hummer Beck18 Sept 20035 Oct 20234
River Gaunless at Fylands Bridge18 Sept 20075 Oct 20234
River Gaunless u/s of Spring Garden2 Oct 20232 Oct 20231
Hummer Beck at Hummer Beck Farm22 Aug 20115 Sept 20233
River Gaunless at South Church16 Jul 201716 Jul 20171
River Gaunless at Auckland Castle16 Jul 201716 Jul 20171
River Gaunless at Evenwood14 Jul 201714 Jul 20171
River Gaunless at Lowlands14 Sept 200714 Sept 20071

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

2002–2025

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 2 measured fish were spread across different length ranges.

Smallest
3.4 cm
Lower quarter
3.8 cm
Median
4.1 cm
Upper quarter
4.5 cm
Largest
4.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Gaunless

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

Brown / sea trout Bullhead Minnow Stone loach European eel Atlantic salmon

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 →