After the discovery of a second Demon shrimp on the Holy Brook, ARK are raising awareness of the importance of Check Clean Dry: www.bbc.co.uk/news/article... @riverflies.bsky.social

Invasive demon shrimp discovered in Wiltshire waterway

The "highly invasive" shrimp are larger than native species and can damage ecosystems.

bbc.co.uk

🍂 The autumn equinox is here. As the days become shorter and temperatures begin to drop, our rivers are changing too – for riverflies, this is also a time of seasonal transition.

Spotted again by an eagle-eyed Riverfly monitor!

ARK - Action for the River Kennet.@riverkennet.bsky.social · 3w ago

A second Demon shrimp has been recorded in the Holy Brook, a tributary to the Kennet. This invasive non-native causes a number of issues. Please Check Clean Dry to make sure you and your river gear doesn't contribute to the spread - see poster for more info #kennetcatchment @riverflies.bsky.social

Riverfly surveyors: if you spot signal crayfish, killer/demon shrimp, or zebra mussels — don't touch or move it. Photo it, note the spot, report via iRecord/INNS Mapper, then Check Clean Dry your kit.

Big River Watch has begun! To join the UK & Ireland's biggest visual survey of river health: 📱 Download the free Big River Watch app 🐟 Enjoy time by a river recording what you see 📆 Submit your surveys by the end of 24th Sept We can't wait to see your observations on our live Big River Watch map!

#Riverflies are ‘canaries of the river’. Monitoring #Riverfly populations is a great way to evaluate river health. Completed my training with the Tweed Foundation. My journey began when listening to Robert Macfarlane talk about his book, ‘Is A River Alive’, last August. @riverflies.bsky.social

Welcome and congratulations on becoming a Riverfly Monitor! @robgmacfarlane.bsky.social has inspired a fair few people to seek out Riverfly training days since his tour last year ☺️

Michael Wilson@mikewilsonuk.bsky.social · 3w ago

#Riverflies are ‘canaries of the river’. Monitoring #Riverfly populations is a great way to evaluate river health. Completed my training with the Tweed Foundation. My journey began when listening to Robert Macfarlane talk about his book, ‘Is A River Alive’, last August. @riverflies.bsky.social

📢A spot has opened up on the Tweed Foundation's next riverfly training course 📆 Tuesday 15 September 10am-5pm in Norham 🌐 You can find out more details on our website (rivertweed.org.uk/tweed-founda...) 📧 If you would like to join please send me an email echapman@tweedfoundation.org.uk

Craving more freshwater news in between our bi-monthly Riverfly Partnership newsletters? Our host organisation, the FBA, sends theirs out monthly – you can read the latest issue here 💧

Freshwater Biological Association@freshwaterbio.bsky.social · last mo.

Greetings freshwater friends! We hope you enjoy some new updates from the FBA... with marvellous Margaritifera margaritifera, splendid Salvelinus alpinus & carnivorous caddisfly. And why is there a trumpet? We invite you to pucker up & blast into the FBA Voice to find out! mailchi.mp/fba/welcome-...

A common misconception is that Riverfly monitoring is only for those living in rural areas, with access to gorgeous streams teeming with fly life... The Urban Riverfly scheme was developed to allow more meaningful monitoring to be done on rivers where sensitive riverflies are less commonly found.

The August 2026 newsletter has now been sent out! If you're not on our mailing list, don't worry – you can read the latest issue and sign up for future updates at www.riverflies.org/newsletters

Did you know... there are presently no existing protections for freshwater ecosystems from underwater acoustic pollution? We were delighted to catch up with Jess Lister a PhD student @edinburghnapier.bsky.social at our ASM to hear more about her research spotlighting this issue. youtu.be/DAS35zn4C9k

In conversation with Jess Lister, PhD student, at the ASM 2026

YouTube video by Freshwater Biological Association

youtu.be

We've got a whole range of Riverfly-themed products at riverflies.teemill.com 👕🧢📔 If you'd like to support our work, buy some sustainable goods, and represent the Riverfly Partnership while you're out and about, then check out our online store! 🛍️

A great day on the Bredagh River for our Kick Sampling Training with Lisa Kirkwood from the Riverfly Partnership! We learned how to collect and identify riverfly species and use them to monitor river health. Thanks to everyone who took part! #CitizenScience @riverflies.bsky.social

📢 Calling all Riverfly monitors! With so much of the UK currently experiencing drought, here's a reminder about what to do if the water level has drastically dropped at your Riverfly site this summer. www.riverflies.org/summer-surve...

The Riverfly Partnership@riverflies.bsky.social · 4mo ago

🛑 If river water levels fall too low to get invertebrates into the net, don't attempt a kick sample. However, please still log a survey on the database, showing you weren't able to sample. ☀️ For full guidance on summertime Riverfly surveys, please see riverflies.org/summer-survey-guidance.

☀️ Trying to keep kids occupied this summer? Why not treat them to a trip down to the river to look at some creepy-crawlies? If that leaves them wanting more riverfly fun, we've got colouring-in sheets, word searches and more that can be downloaded for free at riverflies.org/childrensactivities 🖍️

Interested in water quality & citizen science? Then, you'll like our newly updated Bloomin' Algae app: www.ceh.ac.uk/our-science/... You can help us understand where and when blooms occur, and alert the community. #freshwater #CitizenScience #algae #UKCEH_AquaEco @ukceh.bsky.social 🧪🦠🌊🚣‍♀️👀🧪🦠🌊🚣‍♀️👀🧪

👀 What are you seeing on your river? Dead fish, pollution, unusual flows or wildlife behaving oddly? In this weather, your observations matter and can make a real difference. Read more 👇 www.thetaca.com/news/what-ar... 📞 EA Incident Hotline: 0800 80 70 60 (24/7)

What are you seeing? — TACA

One of the things I've come to realise over the past few years is just how much time people spend beside rivers. Anglers, obviously, when we can! But also dog walkers, runners, photographers, birdwat...

thetaca.com

The Big Butterfly Count 2026 is here and butterflies need our help! 🦋 From now until 9 August, spend just 15 minutes outside counting the butterflies you see and help us take nature's pulse. The best part? Anyone, anywhere can take part. Count yourself in 👉 https://butrfli.es/3SVFepj

🔎 We have all sorts of useful resources for Riverfly monitors on our website! 💧 If you've ever wanted to understand the 'RMI Eight' in more depth, such as why these are the groups that get counted, and what the presence and absence of each group might indicate, then check out this handy explainer.

🚨 A reminder for all Riverfly monitors on what to do if you get a trigger level breach! ⌚ Remember, for it to count as a "confirmed trigger level breach", you need have done a second sample within 48 hours. Be sure to select 'Second sample' when inputting it to the database.

Greetings river health warriors... and heartfelt thanks to all involved in Riverfly Monitoring! ✨ It is a pleasure to announce that, following ongoing success, the Environment Agency has committed to a further 3 years of funding to support the Riverfly Partnership. 💙 www.fba.org.uk/fba-voice/th...

The Riverfly Partnership’s year of impact: Extending community support for freshwaters with the Environment Agency — Freshwater Biological Association

The Riverfly Partnership, hosted by the FBA, continues to empower communities to protect and restore rivers across the UK. Over the past year (April 2025 – March 2026), the initiative, with support fr...

fba.org.uk

Our June newsletter is out now! If you'd like to read it, or sign up to our mailing list so future issues come directly to your inbox, go to riverflies.org/newsletters.

East Berwickshire now has a great team of citizen scientists ready to monitor river health throughout the region. @riverflies.bsky.social If you would like to join a riverfly monitoring group in Eyemouth, Reston, or elsewhere in the Eye & Tweed catchments let me know

Did some riverfly sampling training in Eyemouth today with @riverflies.bsky.social Good fun and looking forward to setting up a new regular monitoring site near my home.

🛑 If river water levels fall too low to get invertebrates into the net, don't attempt a kick sample. However, please still log a survey on the database, showing you weren't able to sample. ☀️ For full guidance on summertime Riverfly surveys, please see riverflies.org/summer-survey-guidance.

These photos were shared with the Environment Agency, who confirmed this was the first demon shrimp recorded on the Holy Brook 🔍 Info on non-native shrimps can be found at www.riverflies.org/keydocuments/#infoformonitors Always remember: check, clean, dry! 🫧 📸: John Sharpe @riverkennet.bsky.social

Looking forward to hearing this talk about stoneflies and their 'paradiddle'! The FBA's Annual Scientific Meeting is next week at Edinburgh Napier and we'll be there - there are still tickets if you'd like to join us 💧

Freshwater Biological Association@freshwaterbio.bsky.social · 4mo ago

Have you ever wondered how human sound might impact freshwater species whilst in their submerged state? Jess Lister, @edinburghnapier.bsky.social, will be introducing a keynote on this very subject at our Annual Scientific Meeting. Interested in finding out more? 👇 www.fba.org.uk/annual-scien...

This Biological Recording Company (@biologicalrecording.co.uk) talk last week, about riverflies in Ireland, was fascinating. Definitely worth a watch if you're interested in learning more about the diversity of riverflies and their habitats. 💧 biologicalrecording.co.uk/2026/05/28/u...

Underexplored Freshwater Habitats in Ireland: Case Studies Using Riverflies

Ireland’s freshwater landscape encompasses over 12,000 lakes and extensive river networks, primarily shaped by Pleistocene glaciation. Standard aquatic surveys consistently target riffle zone…

biologicalrecording.co.uk

Calling all freshwater science fans! Have you registered for our Annual Scientific Meeting? The ASM is in Edinburgh on Thursday 11 June. We would love you to join us! The ASM has an inspiring line-up including a keynote from Bernd Hänfling. Find out more & register! www.fba.org.uk/annual-scien...