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
riverflies.org
Hosted by @freshwaterbio.bsky.social
Thank you to everyone who joined us at the Riverfly Conference 2025!
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
November 25, 2025 at 12:36 PM
Thank you to everyone who joined us at the Riverfly Conference 2025!
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
Thank you to everyone who joined us at the Riverfly Conference 2025!
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
November 25, 2025 at 12:18 PM
Thank you to everyone who joined us at the Riverfly Conference 2025!
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
A big shout out to all of our speakers, and to Steve and Rebecca for brilliantly chairing the morning and afternoon sessions. 👏
Presentation slides are on our website:
👉https://www.riverflies.org/newsblog/riverfly-conference
We’re proud to have been part of the CaSTCo (Catchment Systems Thinking Cooperative) project, helping advance collaborative river monitoring across England and Wales. Together, we’ve proven that community data can drive real decisions for river recovery, and this is just the start!
November 12, 2025 at 11:49 AM
We’re proud to have been part of the CaSTCo (Catchment Systems Thinking Cooperative) project, helping advance collaborative river monitoring across England and Wales. Together, we’ve proven that community data can drive real decisions for river recovery, and this is just the start!
💧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
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
💧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
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
🪰 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
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
🪰 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
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
📆 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
✨ 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
📆 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
💧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
🐛 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
💧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
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 💀
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
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 💀
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
👏 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
📊 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
👏 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
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
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
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
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
✨ 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
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...
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
🐟 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...
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.
👉 Find out more in the replies below.
October 20, 2025 at 2:01 PM
💧Ever wondered what your RMI scores would look like in a pristine river? 🏞️
👉 Find out more in the replies below.
👉 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
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
📅 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
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...
📘 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
🪶 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...
📘 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
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
🎥 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
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...
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
🐛 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...
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...
#Riverfly #MeetYourEcologyContact #CitizenScience #Partnerships #FreshwaterEcology #EnvironmentAgency #YorkshireRivers #WaterQuality #CommunityScience
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...
👏 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
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...
👏 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...
📍 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
🎟️ 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...
📍 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
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
🚨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
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
Caddis larvae make protective cases from twigs, sand, and stones. Each one is unique!
#FreshwaterFriday #Caddisfly #FreshwaterInvertebrates
September 26, 2025 at 10:38 AM
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
Caddis larvae make protective cases from twigs, sand, and stones. Each one is unique!
#FreshwaterFriday #Caddisfly #FreshwaterInvertebrates
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
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
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
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
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
📢 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
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