RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Roman River (Main Reaches)

Largest measured 3-spined stickleback: 5.8 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Roman River (Main Reaches) was 5.8 cm, recorded at Bounstead FGS on 12 September 2024.

Across 182 measured 3-spined stickleback, the median measured length was 3.3 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Roman River (Main Reaches).

See 3-spined stickleback records across England →

Most recent observation12 October 2025Bounstead FGS · 29 fish
Largest measured 3-spined stickleback
5.8 cm
Median length
3.3 cm
Fish measured
182
Survey locations
3

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
5.8 cm12 Sept 2024Bounstead FGS168775
5.3 cm16 Sept 2021Bounstead FGS160617
5.2 cm24 Oct 2019Bounstead FGS155849
5.2 cm28 Jun 1999Bounstead FGS14699
4.9 cm25 Oct 2011Upstream Layer Mill128852
4.9 cm25 Oct 2011Upstream Layer Mill128852
4.9 cm2 Jul 1999Olivers Farm14701
4.9 cm16 Mar 1984Olivers Farm14676
4.8 cm24 Oct 2019Bounstead FGS155849
4.7 cm9 Oct 2022Bounstead FGS162119

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
Bounstead FGS28 Jun 199912 Oct 20259
Upstream Layer Mill8 Nov 20051 Nov 20233
Olivers Farm16 Mar 198414 Nov 20053

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

1984–2025

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 182 measured fish were spread across different length ranges.

Smallest
1.7 cm
Lower quarter
2.8 cm
Median
3.3 cm
Upper quarter
3.8 cm
Largest
5.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Roman River (Main Reaches)

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

European eel Roach Stone loach Dace Gudgeon 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 →