RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Ivel

Largest measured 3-spined stickleback: 5.8 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Ivel was 5.8 cm, recorded at Henlow Control Site on 3 May 2000.

Across 34 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 Ivel.

See 3-spined stickleback records across England →

Most recent observation11 May 2016Henlow · 1 fish
Largest measured 3-spined stickleback
5.8 cm
Median length
4 cm
Fish measured
34
Survey locations
8

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 cm3 May 2000Henlow Control Site30866
5.5 cm17 Jul 2006Girtford Weir100143
5.5 cm13 May 2005High Romper Bridge84563
5.5 cm6 May 2005DS Iron Bridge84536
5.3 cm3 May 2000Henlow Control Site30866
5 cm19 Jun 2003Biggleswade Common76471
4.8 cm3 May 2000Henlow Control Site30866
4.5 cm6 May 2005DS Iron Bridge84536
4.5 cm1 May 1995Astwick103267
4.5 cm1 May 1995Astwick103267

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
Henlow3 May 200011 May 20164
Girtford Weir8 Jul 200312 Jun 20135
DS Iron Bridge3 May 19954 Jun 20135
Gt Ouse Confluence19 May 201019 May 20101
Biggleswade Common11 Jun 200218 May 20105
High Romper Bridge13 May 200513 May 20051
Henlow Control Site3 May 20003 May 20001
Astwick15 Mar 19891 May 19952

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

1989–2016

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 34 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
3.6 cm
Median
4.1 cm
Upper quarter
4.5 cm
Largest
5.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ivel

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

Chub Pike Roach Gudgeon Dace 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 →