RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Main Somerset Frome

Largest measured 3-spined stickleback: 6.1 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Main Somerset Frome was 6.1 cm, recorded at Iron Mill Farm (Se-03) on 12 July 2010.

Across 130 measured 3-spined stickleback, the median measured length was 3.1 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 Main Somerset Frome.

See 3-spined stickleback records across England →

Most recent observation29 August 2019Tellisford (Te06)
Largest measured 3-spined stickleback
6.1 cm
Median length
3.1 cm
Fish measured
130
Survey locations
11

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
6.1 cm12 Jul 2010Iron Mill Farm (Se-03)122762
6 cm5 Oct 2017Welshmill151869
5.9 cm12 Jul 2010Iron Mill Farm (Se-03)122762
5.6 cm26 Jul 2010Bull's Bridge123156
5.4 cm5 Oct 2017Welshmill151869
5.4 cm26 Jul 2010Bull's Bridge123156
5.4 cm12 Jul 2010Iron Mill Farm (Se-03)122762
5.3 cm5 Oct 2017Welshmill151869
5.3 cm5 Oct 2017Welshmill151869
5.2 cm5 Oct 2017Welshmill151869

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
Tellisford (Te06)18 Aug 201029 Aug 20194
Downstream Scutts Bridge (Te)27 Aug 200331 Jul 20195
Blatchbridge (Te)24 Jul 201924 Jul 20191
Snarlton Farm (Te)21 Aug 200323 Jul 20197
Welshmill27 Jul 20165 Oct 20172
Vernal Lodge27 Jul 20162 Aug 20172
Longhouse Farm10 Aug 201610 Aug 20161
Tellisford, Depleted Reach19 Sept 201319 Sept 20131
Creamery (Te)4 Sept 200318 Sept 20134
Bull's Bridge26 Jul 201026 Jul 20101
Iron Mill Farm (Se-03)12 Jul 201012 Jul 20101

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

2003–2019

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 130 measured fish were spread across different length ranges.

Smallest
1.8 cm
Lower quarter
2.9 cm
Median
3.2 cm
Upper quarter
3.8 cm
Largest
6.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Somerset Frome

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

Minnow Stone loach Roach Bullhead Chub Dace

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 →