Read the story of how the Canal & River Trust came to be
Work for us
We have vacancies across all of our waterways and in the offices, museums and attractions that support them. We're one of the UK's biggest charities and we take pride in everything we do
If you're thinking of getting in touch then please take a moment to look through these pages as we probably have the answer on our website
Planning & design
All you need to know about planning and design on our canals and rivers
Find a winter mooring
Find a cosy section of canal to hunker down in this winter
10 reasons to take up canoeing
It's a great way to get fit and explore our waterways at the same time
Share the Space
Take a look at our common sense guide to sharing the towpath
Find a place to fish
From reservoirs to club-managed canals and river stretches - find your nearest place to fish
Get your free guide
Download your free guide today and start exploring the waterway nature near you
Download your free guides
You've nine free days out guides to choose from - where will you go first?
Find a walk near you
Are you ready to ramble? Find a waterside stroll or a satisfying hike along our beautiful canals and rivers
Take a look at our upcoming events here.
Find your favourite waterway
With over 95 canals, rivers, reservoirs, docks and navigations, find out more about your favourite waterway
Something for everyone
Help us make a difference and have fun along the way. Find your perfect volunteer role today
Join our team
Could you join your local Towpath Taskforce team and help us to keep our canals looking lovely?
Desmond Family Canoe Trail
If you're aged 16-25 and would like to get involved with this exciting project, please get in touch
Could you be a volunteer lock keeper?
Find out what's involved with this popular volunteering opportunity
Why we think canals are better with Friends
Become a Friend of the Canal & River Trust today and you’ll open yourself up to new experiences and endless opportunities.
We love and care for your canals and rivers, because everyone deserves a place to escape.
Topmouth gudgeon (Pseudorasbora parva) are a small freshwater fish native to Asia. Read more about this invasive fish.
Appearance: topmouth gudgeon have a round elongated body, silver in colour and shimmering purple sides.They have a characteristic up-turned lower jaw and mature males have a prominent hump behind the head.
Typical size: 4-8cm
Lateral Line scale count: 34-38 (this is the dark row of scales along the central length of the fishes body).
Lifespan: 2 to 4 years
Topmouth Gudgeon are a small freshwater fish native to Asia. They have quickly spread through Europe and have been introduced to the UK via the aquatic trade. They are extremely invasive causing great harm to local ecosystems. They breed successfully in large numbers, out-compete native fish and predate on invertebrates and the eggs and larvae of other fish. They are highly territorial, males guard the eggs and have been recorded in densities of 60+ fish per square metre.
Last date edited: 18 September 2015