RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Mardyke

Largest measured 3-spined stickleback: 7.2 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Mardyke was 7.2 cm, recorded at M25-A13 on 3 April 1995.

Across 81 measured 3-spined stickleback, the median measured length was 5.1 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 Mardyke.

See 3-spined stickleback records across England →

Most recent observation30 May 201914 Arches Bridge · 1 fish
Largest measured 3-spined stickleback
7.2 cm
Median length
5.1 cm
Fish measured
81
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.

LengthSurvey dateSurvey locationSurvey ID
7.2 cm3 Apr 1995M25-A1314723
6.6 cm17 May 2007M25-A13105368
6.6 cm16 May 200714 Arches Bridge105370
6.5 cm3 Apr 1995M25-A1314723
6.3 cm23 Apr 2013Grangewater135914
6.2 cm23 Apr 2013Grangewater135914
6.2 cm16 May 200714 Arches Bridge105370
6.2 cm3 Apr 1995M25-A1314723
6.2 cm30 Mar 199514 Arches Bridge14724
6 cm1 May 201314 Arches Bridge137066

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
14 Arches Bridge30 Mar 199530 May 20195
North Stifford25 Mar 199225 Apr 20134
Grangewater25 Sept 200123 Apr 20133
M25-A133 Apr 199517 May 20073
War Department Sluice19 May 199819 May 19981
Circus Tavern7 Apr 199218 May 19982

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

1992–2019

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 81 measured fish were spread across different length ranges.

Smallest
2.5 cm
Lower quarter
4.2 cm
Median
5.1 cm
Upper quarter
5.8 cm
Largest
7.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Mardyke

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

European eel Roach Rudd Tench Common carp Golden goldfish

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 →