RiverFish

3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the River Uck

Largest measured 3-spined stickleback: 5.5 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the River Uck was 5.5 cm, recorded at Honey Green Caravan Park on 7 August 2024.

Across 21 measured 3-spined stickleback, the median measured length was 3.1 cm.

Surveyors recorded weights for 11 3-spined stickleback. The median was 0 oz (0.001 kg) and the largest recorded weight was 0 oz (0.001 kg).

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

See 3-spined stickleback records across England →

Most recent observation14 August 2025Uckfield · 2 fish
Largest measured 3-spined stickleback
5.5 cm
Median length
3.1 cm
Fish measured
21
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
5.5 cm7 Aug 2024Honey Green Caravan Park166435
4.9 cm3 Sept 2003Ridgewood Bridge76922
4.5 cm8 Sept 2011Buxted Weir127794
4.5 cm3 Sept 2003Ridgewood Bridge76922
3.5 cm14 Jul 2023Upstream Isfield Gate162674
3.5 cm8 Sept 2011Buxted Weir127794
3.5 cm4 Sept 2006Isfield Weir102522
3.2 cm15 Sept 2005Owlsbury Farm87656
3.2 cm15 Sept 2005Owlsbury Farm87656
3.1 cm15 Sept 2005Owlsbury Farm87656

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
Uckfield11 Sept 201814 Aug 20252
Isfield Weir4 Sept 20067 Aug 20252
Honey Green Caravan Park8 Aug 20137 Aug 20243
Upstream Isfield Gate10 Oct 201914 Jul 20232
Bradfords Bridge17 Aug 201517 Aug 20151
Buxted Weir8 Sept 20118 Sept 20111
Owlsbury Farm15 Sept 20055 Sept 20072
Ridgewood Bridge3 Sept 20033 Sept 20031

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

2003–2025

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 21 measured fish were spread across different length ranges.

Smallest
1 cm
Lower quarter
2.7 cm
Median
3.1 cm
Upper quarter
3.5 cm
Largest
5.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 11 3-spined stickleback. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0 oz (0.001 kg)
Median
0 oz (0.001 kg)
Upper quarter
0 oz (0.001 kg)
Heaviest
0 oz (0.001 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Uck

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

Stone loach Minnow Roach Bullhead Gudgeon Chub

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 →