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Michael Rosenberg

@mrosenberg.bsky.social
1.4K followers 218 following 1.3K posts

Evolutionary Biologist, Data Scientist, Amateur Fiddler Crab Wrangler I don't so much focus on specific topics as meander randomly through the topical landscape, like a broken adaptive model that doesn't realize downhill isn't supposed to be an option.

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Michael Rosenberg @mrosenberg.bsky.social · 02/10/2026
A few weeks ago I realized that it has been almost 29 years since I started the #fiddlercrab information webpages. This mind-blowing realization gave rise to some introspection about how/why the site was created, which I have now explained on a new About page: www.fiddlercrab.info/about.html 🦀🧪🦑
fiddlercrab.info
About fiddlercrab.info
Fiddler Crabs
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Ian Coldwater 🧊🚫 @lookitup.baby · 30/09/2026
BREAKING NEWS: “Do geese see God” is a palindrome
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TW @twesq.bsky.social · 20/09/2026
this is fantastic and I learned something new
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JB @notjaredb.bsky.social · 22/08/2026
Fiddler crabs. #photography #ctnaturefans
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Darren M. A. Calvert @dmacalvert.bsky.social · 06/08/2026
I will almost certainly spot something I've missed but I think I'm finished with these crab studies. 🦀 #SciArt
Digital watercolour drawings of a blue fiddler crab (top) and a rainbow crab (bottom)
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James McInerney @jomcinerney.bsky.social · 27/07/2026
I’ve seen trees you people wouldn’t believe. Deep branches collapsing off the shoulder of a saturated site, unresolved. I watched long-branch attraction glitter in the dark near the root of the Archaea. All those topologies will be lost in time… like tips in a polytomy.
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Michael Rosenberg @mrosenberg.bsky.social · 20/07/2026
New fiddler crab species! Get'em while they're hot! 🦀 doi.org/10.11646/zoo...
doi.org
Description of Leptuca capillosa sp. nov., a new fiddler crab species (Crustacea, Decapoda, Ocypodidae) from the continental coast of Ecuador | Zootaxa
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Dr. Viktor Baranov🧪🦟🐛🪲 @swarmofthoughts.bsky.social · 06/07/2026
Males of Afruca tangeri fiddler #crabs demonstrating to each other in a bit of stand-off in Rio Chara preserve at Tarifa, Southern Spain 🦀
Males of fiddler crabs waving enlarged claws at each otherMales of fiddler crabs waving enlarged claws at each otherRio Chara estuary azure against blue sky, reaches the Straits of GibraltarCoastal marsh of Rio Chara, with cows grazing and cloud-covered los Alcornacales mountains at the background
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Jo Wolfe, PhD @jopabinia.bsky.social · 03/07/2026
Start your day with a couple dozen fiddler crabs, and the crab feed 🦀 bsky.app/profile/did:...
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Michael Rosenberg @mrosenberg.bsky.social · 03/07/2026
In the last six days, the @nytimes.com has sent me (identical email address) the same solicitation 5 times (but using 4 slightly different subject lines). SPAMing potential customers is always a great business strategy.
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Michael Rosenberg @mrosenberg.bsky.social · 18/06/2026
So apparently one of MDPI's latest scam schemes has been to create a "networking" site, which they did by (as far as one can tell) scraping/copying everything off of ResearchGate and other science social media into their own version (possibly even BlueSky profiles).
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Shiv Ramdas Mens Rice Activist @nameshiv.bsky.social · 13/06/2026
today I discovered this incredible story of a minor league pitcher who is 6'4 wears glasses and a ginger beard who hurt his elbow and went to the doc for Tommy John surgery and was mistaken for a pitcher from a diff team who was also there for TJ surgery on same day anyway heres their pics and names
Two dudes who were formed from the same mould in consecutive batches at the factory and are somehow completely unrelated
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Michael Rosenberg @mrosenberg.bsky.social · 12/06/2026
Back in April I commented about the number of class-action lawsuits for which I seemed to be a party of, counting at least 11 new ones in the 12 preceding months. In the two months since, I've been notified of 3 more, so I am now averaging more than 1 per month.
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michaeledward @michaeledward.bsky.social · 26/05/2026
Scientists have discovered a tiny blue octopus lurking beneath the waters near the Galápagos Islands. About the size of a golf ball, the newly identified deep-sea species was found nearly 1,800 meters below the surface during an expedition in the Pacific Ocean.
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Ross Floate @rossfloate.bsky.social · 08/05/2026
Oh my. This is spectacular. sinceyouarrived.world/taken
sinceyouarrived.world
taken.
A web page that tells you what your browser gave away the moment you arrived. No login, no form, no permission. Most pages do this. None of them tell you.
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Michael Rosenberg @mrosenberg.bsky.social · 21/04/2026
TFW you log into a meeting only to discover that you royally screwed up the time zone it was scheduled for and missed it by n hours
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Michael Rosenberg @mrosenberg.bsky.social · 08/04/2026
I got curious and did a search through email...over the past 12 months I've been a member of at least **eight** different class action lawsuits. I feel like this says something about society, but I'm not sure what. I suspect it says a lot less about me, beyond being an active member of said society.
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Michael Rosenberg @mrosenberg.bsky.social · 30/03/2026
We may not technically be kittens anymore, but we can still snuggle when we want to #cats
Two long-haired cats, one gray and one black sitting on a chair together, with the black one half on top of the gray one, but with heads in opposite directions
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Michael Rosenberg @mrosenberg.bsky.social · 20/03/2026
For those interested in a non basketball bracket this March, I direct you to the #FiddlerCrabBracket I posted 2 years ago, memorialized in order in this Google doc docs.google.com/document/d/1... I'll be out of touch for a week, but will happily answer questions when I return #FiddlerCrab 🦀🦑🧪
docs.google.com
Fiddler Crab Tournament Archive
Fiddler Crab Tournament Bluesky Posts Introduction March 29, 2024 Inspired by March Madness (and not at all influenced by March Mammal Madness), I've decided to run a #FiddlerCrab tournament brack...
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Michael Rosenberg @mrosenberg.bsky.social · 18/03/2026
Another example of AI failure. I will not use generative AI. Full stop. However, I have collaborators who will for minor purposes.
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Michael Rosenberg @mrosenberg.bsky.social · 13/03/2026
Mysterious furry object found. Investigation will commence.
A pale gray ball of fur in a gray chair
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Derek Hennen, Ph.D. @derekhennen.bsky.social · 03/03/2026
Good article, but the framing is wrong. There is not a dearth of interest in taxonomy. There is a scarcity of funding and positions, which is a deliberate choice by funding agencies and institutions. The youth love taxonomy! It's the olds that are failing to meet their passion!
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Rodger Sherman @rodger.bsky.social · 18/02/2026
DOG AT THE OLYMPICS FULL COMPETITION HIGHLIGHTS
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Michael Rosenberg @mrosenberg.bsky.social · 09/02/2026
A slightly out of focus photo of Normal as he is actively beginning his headbutt of my phone. #cats
Slightly out of focus photo of a long-haired gray tabby staring at the camera
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Fumio Takeshita @fum10.bsky.social · 06/02/2026
Our paper is out from Animal Behaviour! Fiddler crabs can discriminate between neighbor unfamiliar individuals and familiar ones in the territorial fighting. www.sciencedirect.com/science/arti...
sciencedirect.com
Dear enemy phenomenon in fiddler crabs: escalation of fights with unfamiliar individuals rather than familiar neighbours
In territorial animals, fights against strangers are often more aggressive than those against neighbours. This is called the ‘dear enemy’ phenomenon a…
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Michael Rosenberg @mrosenberg.bsky.social · 05/02/2026
Abby wants to know what the stupid human is doing #cat
A smoky black cat with green eyes sitting up and looking at the camera
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Michael Rosenberg @mrosenberg.bsky.social · 04/02/2026
New species of fiddler crab has been described from the Pacific coast of Panama, bringing the current total number of recognized extant species to 108. doi.org/10.15359/rev...
doi.org
A new fiddler crab species (Brachyura: Ocypodidae) from the Pacific coast of Panama | Revista Ciencias Marinas y Costeras
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Michael Rosenberg @mrosenberg.bsky.social · 28/01/2026
Allometric constraints and the modulation of weapon evolution by mating system in fiddler crabs doi.org/10.1093/evol... 🦀🧪🦑
doi.org
Allometric constraints and the modulation of weapon evolution by mating system in fiddler crabs
Abstract. Sexual selection potentially drives the evolution of exaggerated traits used in intrasexual contests. However, the extent to which mating systems
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ERIS @petday.bsky.social · 21/01/2026
crab studies from @crabspromenade.bsky.social photos
GEOGRAPSUS GRAYI
DANARMA LEPTOMERUS
MACROPHTHALMUS SP.
TUBUCA COARCTATA
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Michael Rosenberg @mrosenberg.bsky.social · 16/01/2026
Admire the marvelous spectacle that is Normal's absurdity of a tail. #cats
A long-haired gray cat, standing on the floor while looking up at the camera, with his massive feather-duster of a tail proudly displayed.
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Michael Rosenberg @mrosenberg.bsky.social · 09/01/2026
Here is Abby, asking wassup? #cats
A long-haired, smoky black cat with green eyes and long tufts of hair coming out of her ears.
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Michael Rosenberg @mrosenberg.bsky.social · 04/01/2026
Here is Winter showing off her winter ruff/beard #Cats
A long-haired calico with a massive ruff of hair beneath her chin like a huge beard or the lower half of a lion's mane.
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Michael Rosenberg @mrosenberg.bsky.social · 02/01/2026
Looking back at 2025, I realized I posted a deficit of cat photos, so while not a New Year's resolution per se, I aim to be a bit better about keeping the "Internet Cat Photo Gods"™ appeased this year. Here is Normal, ~11 months old, asking why I'm shoving my phone in his face.
A long-haired ~11-month old gray tabby--named Normal--looking at the camera from a close distance.
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Michael Rosenberg @mrosenberg.bsky.social · 02/01/2026
Some visitors for the New Year: A pair of red foxes having fun 1/8
A red fox standing on a bank by a lake, looking into the water with its reflection seemingly looking back at itA pair of red foxes standing on some stepsA pair of red foxes on the shore of a lake
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Michael Rosenberg @mrosenberg.bsky.social · 01/01/2026
@amalelmohtar.com did you do a top 10 books list this year that I missed? Enjoyed the last few as good recommendations to look for
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Mrs. Betty Bowers @mrsbettybowers.bsky.social · 26/12/2025
This is perfect. The DOJ's embarrassing snafu with disappearing redactions was the fault of Elon Musk. Musk cancelled government subscriptions to Adobe programs that would have made the redactions permanent. What a pack of fools.
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Jake Williams @malwarejake.bsky.social · 26/12/2025
Just wow. @pluralistic.net.web.brid.gy came out swinging in this article. He's right though and that's the coolest part.
In 2026, countries that want to win the trade war have a unique historical possibility: They could repeal their “anticircumvention” laws, which make it illegal—a felony, in many cases—to modify devices and services without permission from their manufacturers. Over the past two decades, the office of the US Trade Representative–which is responsible for developing and coordinating US international trade, commodity, and direct investment policy—has pressured most of the world into adopting these laws, hamstringing foreign startups that might compete with Apple (by providing a jailbreaking kit that installs a third-party app store), or Google (by blocking tracking on Android devices), or Amazon (by converting Kindle and Audible files to formats that work on rival apps), or John Deere (by disabling the systems that block third-party repairs), or the Big Three automakers (by decoding the encrypted error messages mechanics need to service our cars). The rents that these digital locks help American companies extract run to hundreds of billions of dollars every single year. The world’s governments agreed to protect this racket in exchange for tariff-free access to American markets. Now that the US has reneged on its side of the bargain, these laws serve no useful purpose.
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Ann Leckie @annleckie.com · 18/12/2025
Oh. My. Fucking. God. You must listen to this.
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Michael Rosenberg @mrosenberg.bsky.social · 17/12/2025
Now time for my Best 6* of 2025 listings, the event absolutely no one was waiting for. * Why Best 6? I refuse to bow down to the bilaterally symmetric pentadactyl lobby! Any suggestion that the number may change year-to-year (or category-to-category) is fake news. Listings are alphabetical
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Prosanta Chakrabarty @prosanta.bsky.social · 01/12/2025
New post by me on #MITPressReader @mitpress.bsky.social On the 100th anniversary of the #ScopesMonkeyTrial the ways we depict #evolution can still give an erroneous progressive view (that evolution leads to humans or ‘increased complexity’). thereader.mitpress.mit.edu/is-our-pictu...
Depictions of evolution where a phylogeny often has humans on the far right or top can give an impression of evolution being progressive of leading to ‘increased complexity’ when it does not. Top figure shows such a phylogeny which can look the same as ‘the March of progress’ depiction most commonly used to depict evolution (showing monkey to man erroneous march of evolution) - instead swiveling some nodes on a phylogeny where humans are shown closer to the center (which doesn’t change relationships) can lead to better ‘tree thinking’
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Emily C. Hughes @emilyhughes.bsky.social · 09/11/2025
pre-writing a devastating obituary for your enemy is god-tier hating of a kind you don’t often see anymore. renaissance haterism. beautiful stuff.
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HAWI Studios @hawistudios.bsky.social · 06/11/2025
Fiddler crabs on the beach #sand #underwater #nature #wildlife #crab #mud #stones #beautiful HA77667
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Cristian Vlad @cristianvlad.bsky.social · 05/11/2025
Wonder why this scene looks so familiar... #WildlifeWednesday 🐦🐕
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HAWI Studios @hawistudios.bsky.social · 05/11/2025
Tetragonal Fiddler Crab #sand #underwater #nature #wildlife #crab #mud #stones #beautiful HA94256
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The Scamperbeasts @scamperbeasts.bsky.social · 31/10/2025
NEWS FLASH: We have achieved the rare and coveted Cat Tree Triple Decker
Smudge is laying at the top of the cat tree, Spice is in the middle, and Saja is there at the bottom. It's all coming together now!
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Boston Tom Levenson @tomlevenson.bsky.social · 31/10/2025
LinkedIn/privacy news you can use.
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Michael Rosenberg @mrosenberg.bsky.social · 26/10/2025
For the record, I am tired of everyone on Bluesky comparing the new plans for the White House to fiddler crabs. This is extremely insulting to fiddler crabs, who did absolutely nothing to deserve this. 🦀
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Callen Harty @callenh.bsky.social · 25/10/2025
Atlantic sand fiddler crab. #AtlanticSandFiddlerCrab #UcaPugilator #SandFiddlerCrab #FiddlerCrab #Crab #Arthropod #Animal #Nature #Photography #TECOManateeViewingCenter #ApolloBeach #Florida
An Atlantic sand fiddler crab in the sand. The crab is just to the right of a small hole in the ground. The shell, or carapace, is mostly white with a few black spots and also is pink in the center, which identifies it as a displaying male. The eyes are hard to see in this photo but are at the end of small stalks. The right claw is considerably larger than the left. It is a light brown with many small bumps on it. The legs are orange.
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Alistair @funkyalchemist.bsky.social · 21/10/2025
Yesterday’s inktober was wholly an experiment - “rivals” blue and orange water based inks drawn onto damp paper #inktober #inktober2025
Fuzzy drawing of two fiddler crabs competing. Blue and orange ink line drawing on white paper but the lines have bled and diffused away from where they were originally drawn and hazy colour has washed across the surface
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