Just imagine discovering an armored animal that breathes w/ gills, regrows lost limbs, builds underground homes, and communicates using urine. This is not an alien. You've merely found a crayfish. New Tangled Nature Deep Dive Essay (with Dr. Jim Stoeckel) 👇 tnature.substack.com/p/crayfish-c...

Here is an assortment of papers from our lab on the invasion ecology of crayfish. New studies are in progress!

We are currently doing some new research on invasive round & tubenose gobies, whose results will be shared in the coming year! Meanwhile, here are some papers from previous round goby studies from our lab... #bioinvasions #invasivespecies

Visited GaiaZoo and the noble crayfish (astacus astacus) were back!

‘Race against time’ to rescue native crayfish from Derbyshire brook https://www.europesays.com/uk/1026199/ Native crayfish discovered living in a brook in Derbyshire face a “race against time” to be saved from…

The recovery of the Lake Erie water snake is an awesome story of how outreach can increase support for less-cuddly endangered species blog.nature.org/2017/01/23/r...

Brief glimpse of our own @vanmierlo.bsky.social in the field (wearing hip waders and a red McGill cap), at 12 seconds into the video.

Spawning Minnows! Among the great wonders of UK wildlife, unbeknownst to most of us, but to be found in our luckier rivers. My prize upon slipping into our local chalk stream, River Lark, Cavenham Heath, at start of Whitsun, suffering withdrawal from not having been in one since March. #MySwim 1/15

Sexual dimorphism in male (back) and female tubenose gobies! Collected from the upper St. Lawrence River.

More and more reports of lionfish in the Adriatic - it is rapidly changing montenegro.news-pravda.com/en/world/202...

Blepharoceridae are amazing 🪰, their larvae have multiple suction cups on the ventral side of the abdomen, to cling to rocks in the strong currents of alpine streams, for the same reasons pupae of those flies are flat and thin. This is Liponeura breverostris. @flygirlnhm.bsky.social #insects

Duck foraging for food underwater: #AGoodPlace Source: www.reddit.com/r/oddlysatis...

📣 We’re recruiting for the 2026–2027 Executive Committee of the Quebec student subunit of the American Fisheries Society (AFS)! 📣 Nous recrutons pour le comité exécutif 2026–2027 du sous-chapitre étudiant québécois de l’American Fisheries Society (AFS) !

Cool study of the impact of an introduced North American freshwater fish on crayfish in New Zealand.

Bower's Lake, Leeds was bejewelled by damselfies, a few caddisfly larvae to be found on the vegetation along with Great Pond Snails (Lymnaea stagnalis), but the most abundant #invertebrate species were, I think, the invasive alien Jenkin's Spire-Snail (Potamopyrgus antipodarum). #molluscmonday 5/6

Some pond-dipping highlights from Norfolk today - Water Stick Insect, Water Scorpion, 9-spined Stickleback and I'm not sure about the last one (presumably some sort of leech or aquatic flatworm?)

Pumpkinseed & popper. #flyfishing

"Scientists now have evidence that yet another invasive aquatic species — the bloody red shrimp — is established in all five Great Lakes. ...The delayed establishment in Lake Superior may reflect barriers such as colder temperatures and geographic isolation.”   greatlakesecho.org/2026/06/07/s...

The day the blackfly larva left the river to join the Kabuki theater.