3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Horsey Mere

Largest measured 3-spined stickleback: 5.7 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Horsey Mere was 5.7 cm, recorded at 77 on 16 October 1986.

Across 19 measured 3-spined stickleback, the median measured length was 4.2 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Horsey Mere.

See 3-spined stickleback records across England →

Most recent observation1 September 200578 · 1 fish

Largest measured 3-spined stickleback: 5.7 cm
Median length: 4.2 cm
Fish measured: 19
Survey locations: 6

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
5.7 cm	16 Oct 1986	77	16976
5.3 cm	4 Oct 1989	77	16987
5.2 cm	23 Sept 1993	83	16992
4.8 cm	14 Sept 1998	79	16998
4.8 cm	16 Oct 1986	77	16976
4.7 cm	16 Oct 1986	76	16975
4.6 cm	16 Oct 1986	77	16976
4.4 cm	3 Oct 1989	85	16989
4.4 cm	16 Oct 1986	77	16976
4.2 cm	16 Oct 1986	77	16976

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
78	28 Aug 1998	1 Sept 2005	2
79	14 Sept 1998	14 Sept 1998	1
83	23 Sept 1993	23 Sept 1993	1
77	16 Oct 1986	4 Oct 1989	2
85	3 Oct 1989	3 Oct 1989	1
76	16 Oct 1986	16 Oct 1986	1

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

1986–2005

Survey records by year

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

286

087

088

289

090

091

092

193

094

095

096

097

298

099

000

001

002

003

004

105

Fish measured by surveyors

Measured length distribution

See how the 19 measured fish were spread across different length ranges.

Smallest: 2.5 cm
Lower quarter: 3.8 cm
Median: 4.2 cm
Upper quarter: 4.8 cm
Largest: 5.7 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Horsey Mere

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

Roach Perch Flounder Pike Common bream Common goby

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 →