Minnow · Phoxinus phoxinus

Minnow in the Itchen Navigation

Largest measured minnow: 9 cm

The largest minnow measured in Environment Agency surveys of the Itchen Navigation was 9 cm, recorded at Allbrook Lock on 19 September 2005.

Across 5 measured minnow, the median measured length was 6.2 cm.

Surveyors recorded weights for 5 minnow. The median was 0.1 oz (0.004 kg) and the largest recorded weight was 0.3 oz (0.009 kg).

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

See minnow records across England →

Most recent observation27 October 2025Ham Farm · 131 fish

Largest measured minnow: 9 cm
Median length: 6.2 cm
Fish measured: 5
Survey locations: 4

Individual EA measurements

Largest measured minnow

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
9 cm	19 Sept 2005	Allbrook Lock	86420
7.8 cm	19 Sept 2005	Allbrook Lock	86420
6.2 cm	19 Sept 2005	Allbrook Lock	86420
5.9 cm	19 Sept 2005	Allbrook Lock	86420
5.5 cm	19 Sept 2005	Allbrook Lock	86420

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where minnow were found

Each point marks a survey location with at least one minnow 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 minnow
Ham Farm	1 Sept 2009	27 Oct 2025	9
Shawford navigation eel index	22 Sept 2009	22 Sept 2009	1
Allbrook Lock	18 Sept 2002	19 Sept 2006	3
Riverside Park	19 Sept 2002	19 Sept 2002	1

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

2002–2025

Survey records by year

Each bar shows how many survey visits recorded minnow that year.

202

003

004

105

106

007

008

209

010

111

012

113

014

115

016

117

018

119

020

021

122

123

024

125

Fish measured by surveyors

Measured length distribution

See how the 5 measured fish were spread across different length ranges.

Smallest: 5.5 cm
Lower quarter: 5.9 cm
Median: 6.2 cm
Upper quarter: 7.8 cm
Largest: 9 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 5 minnow. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.002 kg)
Lower quarter: 0.1 oz (0.002 kg)
Median: 0.1 oz (0.004 kg)
Upper quarter: 0.2 oz (0.006 kg)
Heaviest: 0.3 oz (0.009 kg)

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

More fish in this river

Explore the Itchen Navigation

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

European eel Pike Roach Grayling Atlantic salmon Brown / sea trout

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 →