RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Main River Isle

Largest measured 3-spined stickleback: 6.3 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Main River Isle was 6.3 cm, recorded at Bere Mills on 26 June 1992.

Across 35 measured 3-spined stickleback, the median measured length was 4.7 cm.

Surveyors recorded weights for 12 3-spined stickleback. The median was 0.1 oz (0.002 kg) and the largest recorded weight was 0.2 oz (0.006 kg).

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 Isle.

See 3-spined stickleback records across England →

Most recent observation30 June 2022Hort Bridge
Largest measured 3-spined stickleback
6.3 cm
Median length
4.7 cm
Fish measured
35
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
6.3 cm26 Jun 1992Bere Mills80027
5.9 cm26 Jun 1992Bere Mills80027
5.8 cm2 Jul 1992Manor Farm, Knowle St. Giles (Se-06)80025
5.8 cm26 Jun 1992Bere Mills80027
5.7 cm26 Jun 1992Bere Mills80027
5.4 cm10 Apr 2013U/s Chard STW135873
5.4 cm25 Jun 1992Donyatt80028
5.3 cm26 Jun 1992Bere Mills80027
5.3 cm18 Jun 1992Cocks Bridge (Te)80033
5.1 cm10 Apr 2013U/s Chard STW135873

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
Hort Bridge7 Jul 201030 Jun 20222
Ilford Bridges (Te)7 Jul 201023 Jun 20162
Cocks Bridge (Te)18 Jun 199223 Jun 20167
Midelney23 Jul 200811 Jul 20132
U/s Chard STW10 Apr 201310 Apr 20131
Hambridge8 Jun 199224 May 20112
Ashford Farm (Te)6 Jul 20106 Jul 20101
Manor Farm, Knowle St. Giles (Se-06)2 Jul 199224 Jul 19972
Bere Mills26 Jun 199217 Jul 19972
Donyatt25 Jun 199225 Jun 19921

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

1992–2022

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 35 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
2.6 cm
Median
4.7 cm
Upper quarter
5.2 cm
Largest
6.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 12 3-spined stickleback. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.1 oz (0.0018 kg)
Median
0.1 oz (0.002 kg)
Upper quarter
0.1 oz (0.003 kg)
Heaviest
0.2 oz (0.006 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Main River Isle

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

European eel Stone loach Minnow Chub Dace Roach

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 →