RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Porter

Largest measured 3-spined stickleback: 4.2 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Porter was 4.2 cm, recorded at Downstream Forge Dam on 30 August 2005.

Across 3 measured 3-spined stickleback, the median measured length was 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 Porter.

See 3-spined stickleback records across England →

Most recent observation11 September 2025Endcliffe Park Downstream Depleted
Largest measured 3-spined stickleback
4.2 cm
Median length
4 cm
Fish measured
3
Survey locations
4

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
4.2 cm30 Aug 2005Downstream Forge Dam87772
4 cm15 Sept 2011Endcliffe Park129034
3.7 cm30 Aug 2005Downstream Forge Dam87772

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
Endcliffe Park Downstream Depleted11 Sept 202511 Sept 20251
Downstream Forge Dam5 Oct 199319 Sept 20233
Endcliffe Park19 Nov 199315 Sept 20112
Sheffield22 Jan 198622 Jan 19861

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

1986–2025

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 3 measured fish were spread across different length ranges.

Smallest
3.7 cm
Lower quarter
3.9 cm
Median
4 cm
Upper quarter
4.1 cm
Largest
4.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Porter

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

Brown / sea trout Bullhead

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 →