3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the South Forty Foot Tributary Sites

Largest measured 3-spined stickleback: 7.8 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the South Forty Foot Tributary Sites was 7.8 cm, recorded at Millthorpe on 21 December 1994.

Across 165 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 South Forty Foot Tributary Sites.

See 3-spined stickleback records across England →

Most recent observation21 December 1994Haconby · 9 fish

Largest measured 3-spined stickleback: 7.8 cm
Median length: 4 cm
Fish measured: 165
Survey locations: 16

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.

Length	Survey date	Survey location	Survey ID
7.8 cm	21 Dec 1994	Millthorpe	69912
7.8 cm	15 Dec 1994	Culverthorpe	69894
7 cm	21 Dec 1994	Haconby	69917
6.4 cm	15 Dec 1994	Beacon Hill	69910
6.3 cm	13 Dec 1994	Scott Willoughby	69900
6.2 cm	13 Dec 1994	Scott Willoughby	69900
6.2 cm	13 Dec 1994	Scott Willoughby	69900
6.2 cm	13 Dec 1994	Silk Willoughby No2	69892
6.1 cm	21 Dec 1994	Horbling	69909
6.1 cm	13 Dec 1994	Scott Willoughby	69900

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 surveyed	First recorded	Last recorded	Visits finding 3-spined stickleback
Millthorpe	21 Dec 1994	21 Dec 1994	1
Horbling	21 Dec 1994	21 Dec 1994	1
Haconby	21 Dec 1994	21 Dec 1994	1
Swarby	15 Dec 1994	15 Dec 1994	1
Morton	15 Dec 1994	15 Dec 1994	1
Culverthorpe	15 Dec 1994	15 Dec 1994	1
Beacon Hill	15 Dec 1994	15 Dec 1994	1
Washdyke	13 Dec 1994	13 Dec 1994	1
Silk Willoughby No2	13 Dec 1994	13 Dec 1994	1
Silk Willoughby No1	13 Dec 1994	13 Dec 1994	1
Scott Willoughby	13 Dec 1994	13 Dec 1994	1
Northbeck	13 Dec 1994	13 Dec 1994	1
Mareham Lane No3	13 Dec 1994	13 Dec 1994	1
Mareham Lane No2	13 Dec 1994	13 Dec 1994	1
Mareham Lane No1	13 Dec 1994	13 Dec 1994	1
A15 Road Bridge	13 Dec 1994	13 Dec 1994	1

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

1994–1994

Survey records by year

Each bar shows how many survey visits recorded 3-spined stickleback that year.

1694

Fish measured by surveyors

Measured length distribution

See how the 165 measured fish were spread across different length ranges.

Smallest: 1.9 cm
Lower quarter: 3.5 cm
Median: 4 cm
Upper quarter: 4.4 cm
Largest: 7.8 cm

0–99 mm

165

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the South Forty Foot Tributary Sites

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

Stone loach Gudgeon Dace 10-spined stickleback Pike 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 →