RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Thet

Largest measured 3-spined stickleback: 5.3 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Thet was 5.3 cm, recorded at East Harling on 27 September 2012.

Across 19 measured 3-spined stickleback, the median measured length was 3.7 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 Thet.

See 3-spined stickleback records across England →

Most recent observation19 September 2024Bridgham Bridge · 1 fish
Largest measured 3-spined stickleback
5.3 cm
Median length
3.7 cm
Fish measured
19
Survey locations
4

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
5.3 cm27 Sept 2012East Harling133975
5.2 cm27 Sept 2012East Harling133975
5.1 cm27 Sept 2012East Harling133975
4.9 cm2 Aug 2012Thetford132594
4.5 cm27 Sept 2012East Harling133975
4.4 cm27 Sept 2012East Harling133975
4.1 cm1 Aug 2012Snetterton Gravel Pits132568
4.1 cm1 Aug 2012Snetterton Gravel Pits132568
3.8 cm13 Aug 2012Bridgham Bridge132780
3.7 cm27 Sept 2012East Harling133975

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
Bridgham Bridge13 Aug 201219 Sept 20242
Snetterton Gravel Pits5 Aug 200918 Sept 20244
East Harling31 Jul 200927 Sept 20122
Thetford2 Aug 20122 Aug 20121

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

2009–2024

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 19 measured fish were spread across different length ranges.

Smallest
2.6 cm
Lower quarter
3.3 cm
Median
3.7 cm
Upper quarter
4.5 cm
Largest
5.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Thet

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

Roach Pike Gudgeon Perch Dace 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 →