RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Main River Chew

Largest measured 3-spined stickleback: 6.2 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Main River Chew was 6.2 cm, recorded at Chew Magna on 5 July 2011.

Across 97 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 Main River Chew.

See 3-spined stickleback records across England →

Most recent observation18 July 2019Keynsham Park (Te)
Largest measured 3-spined stickleback
6.2 cm
Median length
3 cm
Fish measured
97
Survey locations
8

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
6.2 cm5 Jul 2011Chew Magna127361
6.1 cm25 May 2011Shrowl Bridge (Te)126387
5.7 cm25 May 2011Shrowl Bridge (Te)126387
5.6 cm23 Jul 2014Stanton Drew (Te)141877
5.6 cm25 May 2011Shrowl Bridge (Te)126387
5.5 cm21 Aug 2012Stanton Drew (Te)133062
5.5 cm25 May 2011Shrowl Bridge (Te)126387
5.5 cm25 May 2011Shrowl Bridge (Te)126387
5.5 cm25 May 2011Shrowl Bridge (Te)126387
5.4 cm21 Aug 2012Stanton Drew (Te)133062

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
Keynsham Park (Te)3 Sept 200318 Jul 20194
Chewton Keynsham4 Sept 200717 Jul 20193
Compton Dando (Te)11 Jul 201911 Jul 20191
Stanton Drew (Te)31 Jul 20082 Jul 20197
Shrowl Bridge (Te)12 Jul 200221 Jul 20164
Pensford (Te)15 May 20026 Jul 20162
Chew Magna5 Jul 20115 Jul 20111
Downstream Chew Valley Lake (Te)8 Jul 200313 Jul 20042

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

2002–2019

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 97 measured fish were spread across different length ranges.

Smallest
1.8 cm
Lower quarter
2.5 cm
Median
3 cm
Upper quarter
5 cm
Largest
6.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main River Chew

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

Bullhead Roach Minnow Stone loach Brown / sea trout 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 →