Dr Crayfish
@drecrevisse.bsky.social
Crayfish researcher, biological illustrator, Arsenal and beer fan.
Reposted by Dr Crayfish
A Sydney Spiny Crayfish crossing the trail in Royal National Park where he'll find a damp ditch to set up home by digging a deep burrow into the mud. This formidable fellow is around 15cms (6") in length and his presence is a good sign that the Hacking River is in pretty good shape. #nature #WildOz
November 18, 2025 at 4:12 AM
Reposted by Dr Crayfish
#wip featuring marbled crayfish, round goby, apple snails, and european water chestnut (all invasive species that affect aquatic ecosystems) fun fact: marbled crayfish are actually all girls, they reproduce asexually #sciart #nature #artist #science #animals #supportartists #art #antiai #snails
November 20, 2025 at 7:36 PM
This is seriously impacting my ability to write my 🦞report😅
November 18, 2025 at 4:26 PM
This is seriously impacting my ability to write my 🦞report😅
Reposted by Dr Crayfish
The Decapoda collection of the Viena's Natural History Museum is very nicely presented
November 13, 2025 at 12:19 PM
The Decapoda collection of the Viena's Natural History Museum is very nicely presented
Reposted by Dr Crayfish
NEW Issue of Crayfish News is out! get it at our website (and become a member if you are not one already!)🦞!
November 12, 2025 at 9:29 PM
NEW Issue of Crayfish News is out! get it at our website (and become a member if you are not one already!)🦞!
Get those nasty red swamp invaders!
The Hooded Merganser is a handsome diving duck with a taste for crustaceans, small fish, and aquatic insects, which they hunt entirely by sight. Their eyes are specially adapted to account for light refraction underwater, making them fearsome—but undeniably beautiful—hunters of crayfish.
November 12, 2025 at 10:47 PM
Get those nasty red swamp invaders!
Reposted by Dr Crayfish
Seagull caught a Crayfish
October 31, 2025 at 11:58 AM
Seagull caught a Crayfish
Very rare bilateral colour mutation in a Rusty Crayfish from the Chagrin R. (photo by Sean Williams)
November 7, 2025 at 8:17 PM
Very rare bilateral colour mutation in a Rusty Crayfish from the Chagrin R. (photo by Sean Williams)
Got to 😍 this band! 🦞!
November 6, 2025 at 6:30 PM
Got to 😍 this band! 🦞!
Reposted by Dr Crayfish
Humans as an invasive species...
November 1, 2025 at 4:43 PM
Humans as an invasive species...
Last monitoring for Marbled crayfish. Was cold and wet but we still did get some.
October 31, 2025 at 11:40 PM
Last monitoring for Marbled crayfish. Was cold and wet but we still did get some.
Trick or treat! Happy Halloween from dr🦞!
October 31, 2025 at 10:29 PM
Trick or treat! Happy Halloween from dr🦞!
Reposted by Dr Crayfish
Reposted by Dr Crayfish
🎃 Halloween costumes 👻 to scare scientists!!!
October 28, 2025 at 9:39 PM
🎃 Halloween costumes 👻 to scare scientists!!!
She was eating my crayfish book and then fell asleep !?!🦞🦞📗🐈⬛
October 28, 2025 at 9:46 PM
She was eating my crayfish book and then fell asleep !?!🦞🦞📗🐈⬛
Reposted by Dr Crayfish
Fears for endangered Tasmanian crayfish species after 'unauthorised' earthworks
Last year TEPA (EPA) quietly issued a stop-work notice to an industrial company over "unauthorised" and "extensive" damage to waterways housing the endangered giant freshwater crayfish.
www.abc.net.au/news/2025-10...
Last year TEPA (EPA) quietly issued a stop-work notice to an industrial company over "unauthorised" and "extensive" damage to waterways housing the endangered giant freshwater crayfish.
www.abc.net.au/news/2025-10...
Unauthorised land clearing impacted endangered crayfish, EPA finds
A creek in northern Tasmanian known to be home to the endangered giant freshwater crayfish has sustained "serious environmental harm" from land clearing and earthworks, the Environment Protection Agen...
www.abc.net.au
October 21, 2025 at 5:23 AM
Fears for endangered Tasmanian crayfish species after 'unauthorised' earthworks
Last year TEPA (EPA) quietly issued a stop-work notice to an industrial company over "unauthorised" and "extensive" damage to waterways housing the endangered giant freshwater crayfish.
www.abc.net.au/news/2025-10...
Last year TEPA (EPA) quietly issued a stop-work notice to an industrial company over "unauthorised" and "extensive" damage to waterways housing the endangered giant freshwater crayfish.
www.abc.net.au/news/2025-10...
Reposted by Dr Crayfish
Reposted by Dr Crayfish
I’ve never seen the biggest freshwater crayfish in the world, but here’s me holding the second biggest (Euastacus armatus)!
October 24, 2025 at 12:08 PM
I’ve never seen the biggest freshwater crayfish in the world, but here’s me holding the second biggest (Euastacus armatus)!
I am having a bit of trouble this morning working on my crayfish report…
October 24, 2025 at 3:17 PM
I am having a bit of trouble this morning working on my crayfish report…
Reposted by Dr Crayfish
IAA25 will have crayfish oral and poster presentations from around the world. Come get a taste of Louisiana with a crayfish boil, Cajun band, and airboat tours through the swamps. The IAA25 website with conference registration, hotel conference rate booking, and meeting information is coming soon
October 17, 2025 at 6:49 PM
IAA25 will have crayfish oral and poster presentations from around the world. Come get a taste of Louisiana with a crayfish boil, Cajun band, and airboat tours through the swamps. The IAA25 website with conference registration, hotel conference rate booking, and meeting information is coming soon
Reposted by Dr Crayfish
The International Association of Astacology's 25th International Symposium on Freshwater Crayfish will be held in New Orleans, Louisiana on 1-5 June 2026 at the Sheraton New Orleans Hotel.
October 17, 2025 at 6:46 PM
The International Association of Astacology's 25th International Symposium on Freshwater Crayfish will be held in New Orleans, Louisiana on 1-5 June 2026 at the Sheraton New Orleans Hotel.
Last sample of the season at one of my favourite spots. 10C and most adult crayfish have mostly disappeared from the stream.
October 11, 2025 at 1:05 PM
Last sample of the season at one of my favourite spots. 10C and most adult crayfish have mostly disappeared from the stream.