RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Main River Parrett

Largest measured 3-spined stickleback: 6.1 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Main River Parrett was 6.1 cm, recorded at Upstream Lopen Brook on 5 July 1994.

Across 193 measured 3-spined stickleback, the median measured length was 3.1 cm.

Surveyors recorded weights for 18 3-spined stickleback. The median was 0.1 oz (0.0015 kg) and the largest recorded weight was 0.2 oz (0.005 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 Parrett.

See 3-spined stickleback records across England →

Most recent observation31 July 2014Thorney Moor (Te) · 13 fish
Largest measured 3-spined stickleback
6.1 cm
Median length
3.1 cm
Fish measured
193
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 cm5 Jul 1994Upstream Lopen Brook79613
5.9 cm12 Jul 1994North Perrott79609
5.9 cm6 Jul 1994Upstream Chinnock Brook79612
5.6 cm2 Aug 2011Bow Barn Farm127308
5.5 cm8 Jun 1994Downstream Petherton Bridge79624
5.4 cm2 Aug 2011Bow Barn Farm127308
5.4 cm26 Jul 2011Gawbridge127176
5.4 cm5 Jul 1994Upstream Lopen Brook79613
5.3 cm26 Jul 2011Gawbridge127176
5.3 cm8 Jun 1994Downstream Petherton Bridge79624

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
Thorney Moor (Te)23 Sept 200331 Jul 20148
Oath Lock bye-pass channel19 Sept 201319 Sept 20131
Downstream Lecher Water15 Jul 199415 Aug 20132
Bow Barn Farm30 Sept 200914 Aug 20133
Gawbridge17 Sept 200913 Aug 20133
Westover Bridge (Te)2 Oct 200323 Jun 20112
North Perrott12 Jul 199412 Jul 19941
Upstream Chinnock Brook6 Jul 19946 Jul 19941
Upstream Lopen Brook5 Jul 19945 Jul 19941
Upstream Yeo Corner15 Jun 199415 Jun 19941
Downstream Petherton Bridge8 Jun 19948 Jun 19941

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

1994–2014

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 193 measured fish were spread across different length ranges.

Smallest
1.6 cm
Lower quarter
2.5 cm
Median
3.1 cm
Upper quarter
3.7 cm
Largest
6.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 18 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 oz (0.001 kg)
Median
0.1 oz (0.0015 kg)
Upper quarter
0.1 oz (0.0028 kg)
Heaviest
0.2 oz (0.005 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 Parrett

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

European eel Minnow Stone loach Roach Bullhead Brown / sea trout

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 →