RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Test

Largest measured 3-spined stickleback: 5.9 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Test was 5.9 cm, recorded at Tufton Main on 15 October 2010.

Across 5 measured 3-spined stickleback, the median measured length was 2.8 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 Test.

See 3-spined stickleback records across England →

Most recent observation9 October 2025Kimbridge House · 1 fish
Largest measured 3-spined stickleback
5.9 cm
Median length
2.8 cm
Fish measured
5
Survey locations
26

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
5.9 cm15 Oct 2010Tufton Main124714
4.1 cm15 Oct 2010Tufton Main124714
2.8 cm19 Aug 2010Mottisfont, Oakley Farm123827
2.5 cm26 Aug 2010Bunnies123801
1.7 cm13 Aug 2009Romsey War Memorial Park120033

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
Kimbridge House14 Sept 20229 Oct 20253
Grayling Island7 Sept 202216 Sept 20252
Kimbridge Mill Cottage5 Sept 201815 Sept 20253
Romsey War Memorial Park13 Aug 200922 Aug 20254
Compton Carrier17 Sept 20109 Jul 20257
Mottisfont Bittern Shallow19 Sept 202419 Sept 20241
Compton Islands17 Sept 202417 Sept 20241
Compton17 Sept 202417 Sept 20241
Broadwater Point16 Sept 202416 Sept 20241
Horsebridge29 Sept 202113 Sept 20242
Sheepbridge12 Sept 202412 Sept 20241
Mainstone Farm26 Sept 201911 Sept 20242
Longbridge12 Aug 201020 Sept 20233
Pittleworth13 Sept 202213 Sept 20221
Mottisfont, Oakley Farm19 Aug 201023 Sept 20212
Freelands House, Wherwell15 Sept 202115 Sept 20211
Kimbridge House 34 Sept 20184 Sept 20181
Greatbridge Railway4 Sept 20184 Sept 20181
Bunnies26 Aug 201026 Jul 20182
Tufton Main15 Oct 201028 Sept 20162
Timsbury Mayfly carrier7 Sept 201021 Sept 20162
Stockbridge, Marsh Court21 Sept 20106 Sept 20162
Freefolk Piscatorial5 Oct 20125 Oct 20121
Chilbolton Common12 Jul 201212 Jul 20121
Tufton Carrier22 Oct 201022 Oct 20101
Moorcourt Carrier11 Aug 201011 Aug 20101

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

2009–2025

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 5 measured fish were spread across different length ranges.

Smallest
1.7 cm
Lower quarter
2.5 cm
Median
2.8 cm
Upper quarter
4.1 cm
Largest
5.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Test

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

Brown / sea trout European eel Bullhead Minnow Stone loach Grayling

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 →