3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Micker Brook

Largest measured 3-spined stickleback: 4.5 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Micker Brook was 4.5 cm, recorded at Mrmi20 on 5 August 2003.

Across 15 measured 3-spined stickleback, the median measured length was 3.2 cm.

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

See 3-spined stickleback records across England →

Most recent observation10 July 2025Mrmi10

Largest measured 3-spined stickleback: 4.5 cm
Median length: 3.2 cm
Fish measured: 15
Survey locations: 4

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
4.5 cm	5 Aug 2003	Mrmi20	76603
4 cm	4 Aug 2003	Mrmi10	76601
3.9 cm	4 Aug 2003	Mrmi10	76601
3.6 cm	4 Aug 2003	Mrmi10	76601
3.6 cm	4 Aug 2003	Mrmi10	76601
3.4 cm	4 Aug 2003	Mrmi10	76601
3.4 cm	4 Aug 2003	Mrmi10	76601
3.2 cm	4 Aug 2003	Mrmi10	76601
3.1 cm	4 Aug 2003	Mrmi10	76601
3 cm	4 Aug 2003	Mrmi10	76601

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
Mrmi10	4 Aug 2003	10 Jul 2025	6
Mrmi01	18 Jun 2024	10 Jul 2025	2
Mrmi20	5 Aug 2003	26 Jun 2006	4
Mrmi05	6 Aug 2003	6 Aug 2003	1

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.

303

204

205

206

007

008

009

010

111

012

013

014

015

016

017

018

019

020

021

022

023

124

225

Fish measured by surveyors

Measured length distribution

See how the 15 measured fish were spread across different length ranges.

Smallest: 2.5 cm
Lower quarter: 2.9 cm
Median: 3.2 cm
Upper quarter: 3.6 cm
Largest: 4.5 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Micker Brook

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

Bullhead Brown / sea trout Stone loach Perch Roach Minnow

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 →