Perch · Perca fluviatilis

Perch in the River Blackwater

Largest measured perch: 28.6 cm

The largest perch measured in Environment Agency surveys of the River Blackwater was 28.6 cm, recorded at Wade Bridge on 30 August 2005.

Across 83 measured perch, the median measured length was 15.4 cm.

Surveyors recorded weights for 21 perch. The median was 2 oz (0.058 kg) and the largest recorded weight was 13.3 oz (0.377 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 Blackwater.

See perch records across England →

Most recent observation16 September 2025Broadlands Fishery · 4 fish

Largest measured perch: 28.6 cm
Median length: 15.4 cm
Fish measured: 83
Survey locations: 4

Individual EA measurements

Largest measured perch

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
28.6 cm	30 Aug 2005	Wade Bridge	86398
27 cm	16 Sept 2025	Broadlands Fishery	178978
26 cm	28 Jul 2011	Lower Whinwhistle	127236
25.8 cm	20 Sept 2011	Broadlands Fishery	128015
25.4 cm	19 Sept 2024	Broadlands Fishery	167854
24.9 cm	20 Sept 2011	Broadlands Fishery	128015
23.8 cm	3 Sept 2018	Broadlands Fishery	153662
22.4 cm	20 Sept 2011	Broadlands Fishery	128015
22 cm	16 Sept 2025	Broadlands Fishery	178978
21.9 cm	14 Sept 2020	Broadlands Fishery	156393

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

Explore the river

Where perch were found

Each point marks a survey location with at least one perch 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 perch
Broadlands Fishery	20 Sept 2011	16 Sept 2025	9
Wade Bridge	16 Sept 2002	23 Jul 2018	6
Landford	30 Apr 2013	30 Apr 2013	1
Lower Whinwhistle	28 Jul 2011	28 Jul 2011	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 perch that year.

102

103

104

105

106

007

008

009

010

211

012

113

014

015

016

017

218

119

120

121

122

123

124

125

Fish measured by surveyors

Measured length distribution

See how the 83 measured fish were spread across different length ranges.

Smallest: 5 cm
Lower quarter: 11.5 cm
Median: 15.4 cm
Upper quarter: 18.7 cm
Largest: 28.6 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 21 perch. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.3 oz (0.008 kg)
Lower quarter: 0.8 oz (0.023 kg)
Median: 2 oz (0.058 kg)
Upper quarter: 3.6 oz (0.102 kg)
Heaviest: 13.3 oz (0.377 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 Blackwater

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

Roach Bullhead European eel Dace Brown / sea trout Stone loach

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 →