RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Main Fowey

Largest measured 3-spined stickleback: 3.9 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Main Fowey was 3.9 cm, recorded at Draynes Bridge on 30 August 2023.

Across 7 measured 3-spined stickleback, the median measured length was 3.4 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 Fowey.

See 3-spined stickleback records across England →

Most recent observation16 September 2024Draynes Bridge · 3 fish
Largest measured 3-spined stickleback
3.9 cm
Median length
3.4 cm
Fish measured
7
Survey locations
1

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
3.9 cm30 Aug 2023Draynes Bridge163227
3.6 cm16 Sept 2024Draynes Bridge167590
3.5 cm16 Sept 2024Draynes Bridge167590
3.4 cm10 Aug 2018Draynes Bridge153661
3.4 cm8 Sept 2016Draynes Bridge149338
3.2 cm16 Sept 2024Draynes Bridge167590
2.8 cm11 Aug 2022Draynes Bridge161613

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
Draynes Bridge1 Jul 200916 Sept 20246

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 7 measured fish were spread across different length ranges.

Smallest
2.8 cm
Lower quarter
3.3 cm
Median
3.4 cm
Upper quarter
3.6 cm
Largest
3.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Fowey

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

Brown / sea trout Bullhead European eel Atlantic salmon Minnow Brook lamprey

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 →