🪰 Freshwater Friday - Flat-bodied stone-clingers (Heptageniidae) Larvae in this family of mayflies have a flattened shape, which is perfect for clinging to rocks in fast-flowing streams. If you spot them, it’s a good sign of a healthy river. #FreshwaterFriday #Riverfly #Heptageniidae

✨ Last chance to get your ticket! ✨ 📆 The Riverfly Conference - 14th November, at the Natural History Museum. 🐛 We're thrilled to announce our keynote speaker, Josh Cohen at Leeds University, discussing their project: Riverkin. 👉 https://www.tickettailor.com/events/theriverflypartnership/1670265

🐛 Head over to the DaNES Annual Insect Show 2025 this weekend! 🐛 💧Saturday 8th November for displays, talks and live exhibits at Nottingham Trent University. 👉Find out more here: https://www.facebook.com/events/1088208220163788/ #InsectShow2025 #RiverflyMonitoring

Happy Halloween freshwater fiends! Do you believe in ghosts? Nope. How about ghost ponds?👻 Please allow us to introduce you to a the amazing #GhostPond aficionado @carlsayer.bsky.social for inspiring ponderings on the incredible power of ghost pond resurrections! Check it out: youtu.be/bT1FLPCjEPw

Beware the creepy-crawlies of the river... 👻 This Halloween, we’re shining a spooky spotlight on the creepy-crawly creatures living just beneath the surface - riverfly invertebrates 👀 🎃Mayflies 🎃Stoneflies 🎃Caddisflies Their presence tells us if our waters are clean or haunted by pollution 💀

📊 Our September data roundup is here! 👏 Riverfly volunteers submitted a huge 821 surveys across the UK — thank you for every single one. 💙 This work is supported by our amazing funders at the Environment Agency and @esmeefairbairn.bsky.social. 👉https://www.riverflies.org/riverflyreports

The Big Insect Rescue Plan is here! 🐞 Following last month’s Wild Summit, organisations have joined forces to halt UK insect declines.🐝 Take the short survey before the end of the month. Results revealed in spring 2026! 🌸 👉 https://butterfly-conservation.org/big-insect-rescue-plan

✨ Freshwater Friday spotlight: Damselflies! ✨ Part of our Extended Riverfly family, damselflies are slender, agile hunters that spend most of their lives underwater as larvae. 💦 #FreshwaterFriday #RiverflyPartnership #CitizenScience #Damselflies #FreshwaterInvertebrates

🐟 Spawning season reminder! Salmon and trout are beginning to spawn. 👀 If you spot signs of spawning, do not sample at that site, and let your local coordinator know. 📚 Learn more about identifying redds and the spawning process via the Wild Trout Trust www.wildtrout.org/assets/files...

💧Ever wondered what your RMI scores would look like in a pristine river? 🏞️ 👉 Find out more in the replies below.

📅 The Riverfly Partnership 2026 Calendar is here! Beautiful riverfly photos, £10.99, shipping early November! Every purchase supports citizen science and river health. www.fba.org.uk/shop/p/river... #RiverflyPartnership #CitizenScience #Freshwater

🪶 Want to expand your mayfly ID skills? 📘 Mayfly Larvae (Ephemeroptera) of Britain and Ireland by J.M. Elliott & U.H. Humpesch is packed with keys, illustrations and ecology notes to help you ID those tricky Mayflies and beyond. Available at:🔗 www.fba.org.uk/shop/p/m11rz...

🎥 Riverfly Quiz Time! 🐛 Can you guess this riverfly? 👀 Look closely... those tufted gills on the abdomen are a big clue! 💬 Think you know? Drop your answer in the comments! #Riverfly #FreshwaterInvertebrates #CitizenScience

🐛 Freshwater Friday: Blue-winged Olive 💧 Blue-winged Olive numbers have dipped — but don’t worry! It’s a normal seasonal change. Adults emerge in summer, and their eggs wait until spring to hatch. 🌿 📊 Find out more in our Riverfly reports: www.riverflies.org/riverflyrepo...

👋 Meet Rachel Spry - our Riverfly Ecology Contact for South and West Yorkshire! With over three years supporting Riverfly monitors, Rachel’s seen the network grow across Yorkshire. 💧 💬 “It’s wonderful to work in partnership with people who truly care about their local rivers.”

In August 2025, our Riverfly monitors submitted an incredible 882 of surveys across the UK. 📊 👏 Thank you to every volunteer who headed out with a kick net last month. Supported by our funders: Environment Agency and @esmeefairbairn.bsky.social. 👉 www.riverflies.org/riverflyrepo...

🎟️ Reminder: Tickets are still on sale for the Riverfly Conference 2025! 📍 Natural History Museum, London 📆 Friday 14th November 2025 Join us for a day of talks (in-person or online), research & connecting with the Riverfly community. Don’t leave it too late! 👉 www.tickettailor.com/events/theri...

🚨Demon shrimp alert! This invasive non-native species, first recorded in the UK in 2012, is spreading fast and threatening our freshwater wildlife by out-competing and preying on native invertebrates. 📲 Report sightings to innsmapper.org & your group co-ordinator 🧽Always Check, Clean, Dry your kit

Nature’s little builders 🌿 In August, some of our monitors found as many as 1000 cased caddis in their sample! Caddis larvae make protective cases from twigs, sand, and stones. Each one is unique! #FreshwaterFriday #Caddisfly #FreshwaterInvertebrates

🌊 Freshwater survey - have your say! 🌿 Are you involved in freshwater biodiversity or water quality monitoring and research in the UK? 💡 UKCEH have a short 15 minute survey, open to those across the freshwater community. 👉 Take the survey: The Changing Status of Freshwater Biodiversity in the UK

Riverfly data in action! 💧 At Stadhampton Mill, a new bypass channel has reconnected 3.25 km of chalk stream habitat. Early RMI scores are strong (10s) & stoneflies are back - rare for the catchment! 🐟🌱 Read more: www.riverflies.org/case-studies... #Riverfly #DataInAction #ChalkStreams

📢 Big River Watch starts today! Download the free app, spend 15 minutes by your local river, and complete the short survey to tell @theriverstrust.bsky.social what you see. Get your survey in by the 25th of September! #BigRiverWatch. #TheRiversTrust #river #nature #riverflies

This Freshwater Friday we celebrate our Riverfly volunteers going out and braving whatever the British weather has in store for them. A wet day at Cressbrook & Litton Flyfishers Club on the Derbyshire Wye - lots of fun! #volunteers #riverflymonitors #citizenscience #britishweather #freshwaterfriday

📅 The Riverfly Conference 2025 is coming! 📍 Natural History Museum, London 📆 Friday 14th November 2025 🎟️ Tickets now on sale – don’t miss out! www.tickettailor.com/events/theri... #RiverflyConference2025 #CitizenScience #Freshwater

In July 2025, our Riverfly monitors once again showed the power of citizen science, submitting an incredible number of surveys across the UK. 👏 A huge thank you to every volunteer who headed out with a kick net last month! #RiverflyPartnership #CitizenScience #VolunteerPower #Rivers #WaterQuality

Our Freshwater Friday Champion! Small but mighty 🦐. In July, our Riverfly monitors counted a staggering 104,859 freshwater shrimp! Freshwater shrimp are tough, feeding on leaf litter and recycling nutrients back into the river. #FreshwaterFriday #FreshwaterShrimp #RiverflyMonitoring

Be ready for your next survey in style 💧 Kick net ✅ ID guide ✅ Riverfly tote ✅ Our Riverfly tote bags are perfect for field days and every purchase helps us keep rivers healthy. 👉 Grab yours now in the Riverfly shop: riverflies.teemill.com/collection/a...

Time for a little Riverfly ID challenge! We’ve zoomed in on one of our favourite water quality indicators – those leaf-like gills are a big clue… 👀 ❔ Do you know which riverfly this is? Drop your guess in the comments ⬇️ 🌿💧

🗣 Environment Agency warns of invasive pink salmon threat to UK fisheries 👉 Read the press release online here: www.gov.uk/government/n...

Meet your RMI coordinators 😎 Daniel Rutland from Wear Rivers Trust #MeetYourCoordinator #RiverflyPartnership #Volunteers #CitizenScience #ProtectOurRivers #Rivers #Invertebrates

🏆 Riverfly Photo Comp - Results! 📷 90 stunning eligible entries, but only 1 winner… 🥇 David Haines – Stunning mayfly in the Scottish Highlands See them all in our gallery riverflies.org/riverfly-photo-gallery A huge thanks to everyone who entered! 💙

🏆 Riverfly Photo Comp - Results! 📷 90 stunning eligible entries, but only 1 winner… 🥇 David Haines – Stunning mayfly in the Scottish Highlands See them all in our gallery riverflies.org/riverfly-photo-gallery A huge thanks to everyone who entered! 💙

🎣 Save the hatch and take the Angler Hatch Survey! 🐟 Help the Salmonfly Project and take a 5-minute survey to help scientists protect aquatic insects. 👉 Find out more on their website salmonflyproject.org – Save the Hatch #SaveTheHatch #Insects #Aquatic #Entomology #Survey

📢 Endemic is a new book by James Harding-Morris 🎉It features a chapter on the Northern February Red Stonefly. The author was shown by Craig Macadam, one of Riverfly's founders & Conservation Director at Buglife, which has its ‘Hunt for the Northern February Red’ every year 👏 The book is out now!

🐛 Riverfly Monitoring creating real change. In North Bristol, volunteers are restoring the River Trym & Hazel Brook by sampling riverflies. Read the full case study below, by Peter Coleman-Smith. www.riverflies.org/case-studies 🌿 Learn how to get involved at riverflies.org

In June 2025, our dedicated citizen scientists gathered an impressive number of surveys for the Riverfly Partnership. The full June data summary is now on the Riverfly Reports page of our website. www.riverflies.org/riverflyrepo...

Disappeared for nearly 80 years....Ithytrichia clavata has reappeared. It's giving 👸💅 Link below read all about the legend from the @freshwaterbio.bsky.social www.fba.org.uk/fba-voice/ra... Photo credit: Keijo Mattila

Meet your RMI coordinators 😎 Alex Jones from Warwickshire Wildlife Trust #MeetYourCoordinator #RiverflyPartnership #Volunteers #CitizenScience #ProtectOurRivers #Rivers #Invertebrates

A quick clip from my Dragonfly Life Cycle video - a timelapse of the metamorphosis of a Willow Emerald nymph into an adult Watch in 4K here: www.youtube.com/watch?v=xy7V... #bugsky #pondlife #ukwildlife @odonataamericas.bsky.social @riverflies.bsky.social @britishdragonflies.bsky.social

Check out our latest blog with some guidance on looking after our precious inverts whilst out sampling in higher temperatures ⬇️ www.riverflies.org/newsblog/sum...

#FreshwaterFriday 🔬 The flattened head of a Heptageniidae mayfly nymph, perfect for life in fast-flowing water. 💧The nymphs are specially adapted to cling to submerged rocks in high-velocity water. Their broad, flattened head and streamlined body allow them to resist against high flow conditions.

Yes, it’s a mayfly on a T-shirt. And yes, it's the coolest thing we own. 💅 💙 Wear our Ephemera danica tee while you monitor and tell the world why riverflies matter the most! 👕 100% citizen scientist approved. 👉 riverflies.teemill.com/product/mayf...

📢The EA has reported a 60% increase in serious pollution incidences in 2024 🔗Read the report here: www.gov.uk/government/news/new-report-finds-systemic-water-company-failure-and-underperformance 👉Riverfly helps detect pollution events and track changes in rivers. Learn how at www.riverflies.org

That moment when you realise it's 4:59pm on a Friday and your to-do list still has 7 tasks 😬 🏃 This flatworm gets it. #FreshwaterFridays #Flatworm #Rush #Weekend #FridayVibes

🔎Riverfly ID Challenge: Can you identify this invertebrate? #RiverflyMonitoring #Freshwater #CitizenScience #UKRivers #Invertebrates #WaterQuality #RiverflyPartnership #Nature

💧 Only 14% of rivers in England are in good ecological status. 🐛 What’s happening beneath the surface can tell us more. When riverfly numbers drop, it’s often the first red flag, empowering citizens to take action. 👉 Want to help protect our rivers? Learn how to get involved at www.riverflies.org

#RiverflySpotlight Olives have small leaf-like gills and are probably the most pollution tolerant of the mayflies 💦 #Entomology #AquaticEcology #Freshwater #Baetidae #Olives #RiverflyPartnership

The latest scoop 🧐 In May 2025, our dedicated citizen scientists gathered an impressive number of surveys for the Riverfly Partnership. The full May data summary is now on the Riverfly Reports page of our website here: www.riverflies.org/riverflyrepo...

Meet your RMI coordinators 😎 Simone Saville from Tyne Rivers Trust Simone has been a coordinator for the Tyne Rivers Trust ARMI Hub since 2016 and is now an accredited tutor. 🧵 #MeetYourCoordinator #RiverflyPartnership #Volunteers #CitizenScience #ProtectOurRivers #Rivers #Invertebrates

Riverfly HQ out on the bankside this Wednesday for a brilliant day of sampling! 🌞 Along with the @freshwaterbio.bsky.social team getting stuck into sorting and ID'ing along Cunsey Beck, Windermere. 💧 #RiverflyPartnership #CunseyBeck #Windermere #River #Nature