River Irwell
12 fish species have been recorded at 23 locations along the River Irwell.
- Fish species
- 12
- Places surveyed
- 23
- Survey visits
- 48
- Records span
- 1996–2022
Local EA evidence
Where fish were recorded
Choose a point on the map to see what was recorded there.
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River conditions
Environment Agency evidence
Fish found in this river
Open a linked fish for detailed measurements, or use the map filter above to compare survey locations.
| Fish | Sites | Most recent | Fish counted | Measured length | Measured weight |
|---|---|---|---|---|---|
| Brown / sea troutSalmo trutta | 17 | 2022 | 257 | Median: 16.8 cm257 fish measuredLargest measured brown / sea trout: 45 cm | — |
| BullheadCottus gobio | 16 | 2022 | 880 | Median: 7.1 cm179 fish measuredLargest measured bullhead: 11.9 cm | — |
| MinnowPhoxinus phoxinus | 13 | 2015 | 4,687 | Median: 5.4 cm497 fish measuredLargest measured minnow: 11 cm | — |
| Stone loachBarbatula barbatula | 10 | 2015 | 2,118 | Median: 9.1 cm356 fish measuredLargest measured stone loach: 12.9 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 8 | 2011 | 233 | Median: 2.3 cm103 fish measuredLargest measured 3-spined stickleback: 9.6 cm | — |
| GudgeonGobio gobio | 4 | 2014 | 634 | Median: 8.2 cm614 fish measuredLargest measured gudgeon: 16.2 cm | — |
| ChubLeuciscus cephalus | 4 | 2008 | 235 | Median: 7.6 cm235 fish measuredLargest measured chub: 31.1 cm | — |
| RoachRutilus rutilus | 4 | 2006 | 50 | Median: 7.5 cm50 fish measuredLargest measured roach: 13.6 cm | — |
| PikeEsox lucius | 4 | 2011 | 7 | Median: 38.3 cm7 fish measuredLargest measured pike: 50.8 cm | — |
| PerchPerca fluviatilis | 3 | 2006 | 47 | Median: 11.4 cm47 fish measuredLargest measured perch: 32.7 cm | — |
| DaceLeuciscus leuciscus | 1 | 2006 | 3 | Median: 7.8 cm3 fish measuredLargest measured dace: 13 cm | — |
| Blue orfeLeuciscus idus | 1 | 2004 | 1 | Recorded length: 6.7 cm1 fish measured | — |
EA surveys have recorded these fish at particular sites and times. Absence from a survey is not evidence that a species is absent from the river. Every valid individual length and weight is retained, with its sample size shown.
Useful context
This page follows survey locations along the main River Irwell. Tributaries and unrelated rivers with similar names are kept separate.
The map shows past fish records, not fishing access or a promise of what you’ll catch today.
How RiverFish handles the data →