The Riverfly Partnership
banner
riverflies.bsky.social
The Riverfly Partnership
@riverflies.bsky.social
Working to protect UK river water quality, further the understanding of riverfly populations & conserve riverfly species & habitats.
riverflies.org
Hosted by @freshwaterbio.bsky.social
💧Crayfish Guidance!

In England's rivers we have both native and invasive non-native species of crayfish.

👀 They are pretty hard to tell apart. Learn what to do and not to do if you come accidentally come across one in your Riverfly sample.

👉231027+Riverfly+Guidance+VB.pdf
November 10, 2025 at 12:02 PM
🪰 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
November 7, 2025 at 12:04 PM
✨ 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
November 5, 2025 at 12:22 PM
🐛 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
November 3, 2025 at 12:02 PM
Reposted by The Riverfly Partnership
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
October 31, 2025 at 12:39 PM
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 💀
October 31, 2025 at 12:02 PM
📊 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
October 29, 2025 at 1:54 PM
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
October 27, 2025 at 12:45 PM
✨ 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
October 24, 2025 at 11:02 AM
🐟 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...
October 22, 2025 at 10:47 AM
💧Ever wondered what your RMI scores would look like in a pristine river? 🏞️

👉 Find out more in the replies below.
October 20, 2025 at 2:01 PM
📅 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
October 17, 2025 at 11:11 AM
🪶 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...
October 15, 2025 at 10:43 AM
🎥 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
October 13, 2025 at 11:44 AM
🐛 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...
October 10, 2025 at 11:23 AM
👋 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.”
October 8, 2025 at 11:25 AM
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...
October 6, 2025 at 11:12 AM
🎟️ 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...
October 3, 2025 at 10:22 AM
🚨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
October 1, 2025 at 3:47 PM
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
September 26, 2025 at 10:38 AM
🌊 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
September 24, 2025 at 12:19 PM
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
September 22, 2025 at 11:52 AM
📢 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
September 19, 2025 at 2:39 PM
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
September 12, 2025 at 12:36 PM
📅 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
September 5, 2025 at 12:03 PM