The comb jelly or sea walnut (Mnemiopsis leidyi) undergoes a Ctenophore-specific cleavage program that is characterized as unipolar and holoblastic (total cleavage). This offspring came from a specimen found in Eel Pond in Woods Hole, USA. Credit to 2017 Embryology Course at @mblscience.bsky.social.

✨ Social Event at the 13th European Zebrafish Meeting ✨ 📍Location:Vienna City Hall Let's enjoy an evening all together with excellent cuisine and live classical music by the string quartet Atmos. 🎻 We look forward to welcoming you to an unforgettable evening in Vienna #EZM2026!

Join us in Vienna for the biggest international 'FISH' meeting in 2026! No matter which fish is your favorite model - zebrafish, medaka, killifish, cavefish, Danionella, cichlids, stickleback, you name them...- this meeting is for you! www.ezm2026.org Abstract submission deadline is March 15th.

📅 Mark your calendars for #EZM2026 in Vienna! Important deadlines are approaching: 🗓 March 15 – Abstract Submission 🗓 March 15 – Travel Grant Applications 🗓 April 15 – Early Bird Registration Don’t miss your chance to share your science and join the zebrafish community at #EZM2026!

Biology Open @biologyopen.bsky.social is partnering with the European Zebrafish Society @ezsociety.bsky.social to offer travel grants for early-career researchers based in the Global South to attend the 13th European Zebrafish Meeting #EZM2026. thenode.biologists.com/bio-global-s...

Scientists have seen Asgard archaea crawling for the first time. When it comes to the origin of eukaryotes, this is like seeing a feathered dinosaur in the wild. (Video courtesy of Philipp Ralder)

A recent lecture on The Genomic Code - how the genome instantiates a generative model of the organism www.youtube.com/watch?v=RAhP... - w/ thanks to @mvargam.bsky.social

🌟 Meet the Scientific Committee: @filodelbene.bsky.social 🌟 Filippo del Bene is a member of the Scientific Committee of #EZM2026, and we are thrilled to have him join us in Vienna! Stay tuned as we continue to introduce the outstanding scientists of EZM2026! 🐟🧬

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Meet our keynote speakers at #EZM2026! 13th European Zebrafish Meeting, taking place in Vienna, July 7–11. 🧬 Elly Tanaka (IMP, Vienna) is a leader in the molecular and cellular biology of limb and spinal cord regeneration, with pioneering contributions to regenerative biology.

Thinking about EZM2026 in Vienna? 🐟 Travel grants are now open for students & ECRs. 7–11 July 2026 | Deadline: March 15 Hope to see many of you there! @ezsociety.bsky.social #zebrafish

🎉 Congratulations to Prof. Elizabeth Patton, recipient of the 2026 CNV Award! 🎉 Prof. Elizabeth Patton is a pioneer in zebrafish models for melanoma research and is renowned for her unwavering dedication to community service! Thank you! 🙏 Let's celebrate her at the #EZM2026 in Vienna! 🥂

Just discovered the wonderful covers of 'Genes to Cells', the journal of the Molecular Biology Society of Japan @mbsj-official.bsky.social – absolutely beautiful! here some examples inspired by mitosis, CRISPR, the DNA helix, and plant pigments

Time for a thread on our Christmas preprint “Origin and evolution of acrocentric chromosomes in human and great apes”. I had so much fun with this project and paper. It will be hard to summarize in a thread, but I’ll try www.biorxiv.org/content/10.6... [1/21]

📅EZM2026-Save the date! We are delighted to welcome you to the 13th European Zebrafish Meeting in Vienna, Austria! 📑Submit your abstract by March 15 2026! ✅Early bird registrations are now open until April 15th 2026 We are looking forward to seeing you there!

We usually credit Charles W. Creaser with the first scientific zebrafish paper, but that is true only with some caveats. Meet another strong contender, Hubert B. Goodrich, interested in all things related to fish genetics. (Photo: Smithsonian, prod.learninglab.si.edu/resources/vi...) (1/9)

Next, in my miniseries on early researchers using zebrafish is Jane M. Oppenheimer, fish embryologist and science historian par excellence. (True, I’m cheating here a bit, but if I mentioned Hellen Battle in the previous bluetorial, it is fair to mention Oppenheimer here.) (1/4)

Second in the “unsung heroes of zebrafish research” series is Canadian born Kenichi Kenneth Hisaoka. We might consider him the “grandfather” of zebrafish toxicology, and also the author of the best pre-Kimmel “developmental series” table. (1/8)

Over the past weeks I have been reading the earliest papers on zebrafish development, and came to realize that in the “canonized" version of zebrafish history we neglect some important people pre-Streisinger. I will try to correct here the record. Let’s start with Edward C. Roosen-Runge. (1/7)

30 years ago today, December 31st 1995, the last ever Calvin & Hobbes comic strip was published. Even now, I still find it so poignant & moving.

I was today years old when I learned that there is a superb (freely available) documentary from 1961 on early zebrafish development by J.V. Durden. collection.nfb.ca/film/embryon... (1/2)

It was great to host Kevin @wiringthebrain.bsky.social for two fantastic lectures. There was a lot to think and talk about :). Thanks for coming!

Free Will in an Indeterministic Universe - my lecture at the Hungarian Academy of Sciences, Dec 2nd 2025 www.youtube.com/watch?v=t61N... w/ thanks to @mvargam.bsky.social for the invitation! 😊

Gentle reminder that everyone should read Jacob and Monod, 1961. And then read it again every once in awhile. A master-class on clear writing (and, ya know, Nobel Prize winning stuff, too). www.sciencedirect.com/science/arti...

I’m very much excited about these ones, and the discussions they will bring. :)

Greetings from Prague! The HFSP Masterclass is in full swing 🇨🇿 — welcoming early career researchers from Central Europe to explore HFSP funding, frontier science, and international collaboration. #HFSPmasterclass #HFSP #GlobalScience #ScienceWithoutBorders 🧪 #sts

Folks, it is finally out! Our paper on T2T assemblies of the zebrafish genome is on BioRxiv: www.biorxiv.org/content/10.1...

#ZebrafishFunFacts: In a 2016 article titled, "The Doctor of Delayed Publications - The remarkable life of George Streisinger", @mvargam.bsky.social takes the reader down memory lane to provide a life history of the Founding Father of #zebrafish research. 🔗 thenode.biologists.com/doctor-delay... 🧪

It is a fantastically well written plea to fund basic sciences. Money quote: "We are currently burning through a stockpile of knowledge accumulated during a more enlightened era of public investment, while allocating insufficient resources for replenishing it."

The figures from this book are all freely available through @figshare.com, hopefully helpful for presentations and teaching: figshare.com/projects/Epi... Please let me know if you find any inaccuracies and I'll fix them. I've already updated one of the figures. #EpigeneticsBook

PREACH! www.nature.com/articles/s41...

Very sad news, John Gurdon has died. A developmental biologist's developmental biologist, Nobel prize winner His work is the foundation of much of today's dev & stem cell bio. An inspiration to many, including me. Always asking questions & wanting the answers www.magd.cam.ac.uk/news/profess...

Sad news: Jane Goodall has died. She did more than any other human for our understanding and appreciation of our closest relatives, the chimpanzees. That chimpanzees are Endangered tells you everything about our species and about what made her so exceptional. www.nytimes.com/2025/10/01/o...

Ernst Haeckel's dumbbells from the Haeckel House in Jena.

Share your favorite black and white movie.

Massive sibling regression study finds that human traits are largely environmentally driven (average heritability = 0.3)

With the caveat productivity is defined as the number of papers published, it's notable to see that the gender and English proficiency gaps are about the same overall. Then the gender gap decreases along the career, while the English proficiency gap widens

A giant in molecular biology and virology has passed. RIP David Baltimore. www.nytimes.com/2025/09/07/s...

Wow, that was amazing! We thank everyone for attending the V4SDB 2025 meeting! You all made it an excellent conference, where we had the opportunity to hear from outstanding speakers,share ideas and experiences, and of course have some unforgettable time during social activities!

Next we look forward to hearing from Máté Varga @mvargam.bsky.social from ELTE Eötvös Loránd University, who will tell us about the Evolution and Development of Breathing Strategies in Paradise Fish! #V4SDB2025 #developmentalbiology #evodevo

Just realized that I have not moved over the lab’s yearly hike thread to Bluesky yet :-/. So previously (somewhere on X) we had summit photos for: Triglav 🇸🇮 (2864 m) in 2019, Säuleck 🇦🇹 (3086 m) in 2021, Kôprovský štít 🇸🇰 (2367 m) in 2022, Ankogel 🇦🇹 (3254 m) in 2023 and Mangart 🇸🇮 (2679) last year.

Some of our colleagues arrived yesterday to attend the amazing two-day Young Developmental Biologist Workshop, a Round table on the use of Artificial Intelligence in research, and of course some social networking! #V4SDB2025 #conference #developmentalbiology #evodevo #morphogenesis #organoids

Better later than never, I guess - we are quite happy to see this paper out in @commsbio.nature.com. Spearheaded by my super talented colleague, Zoltán Varga, we have compared the behaviour of zebrafish and paradise fish larvae, which turned out to be quite different. www.nature.com/articles/s42...

A selection of covers from early (1951-1953) Decca classical long-playing records designed by the legendary graphic artist Erik Nitsche. (1/4)

Well, let's give it a try.

📢The full programme for the @v4sdb.bsky.social Meeting 2025 is now online! Check out the exciting line-up, including selected short talks and flash talks. v4sdb2025.img.cas.cz/programme/ See you in 25 days in 🇸🇰⛰️! #developmentalbiology #evodevo #conference

Plus, the “Barkley Marathon” included a canoe trip to the other side of the river, and, of course, to become a #Finisher (we had 5), you needed to bring the pages back FIVE times. But everyone knows that, right? It’s #Barkley! 😉

#TCTeAC #theconferencetoendallconferences

Infographic paradise from the youth magazine Tudomány és Technika (Science and Technique) published in Hungarian but in Slovakia, Bratislava between 1954 and 1963. And this is just a "small" selection! 1. source adt.arcanum.com/hu/collectio...

Read all Elements in The Philosophy of Biology series for FREE during the ISHPSSB conference 20 - 25 July. You can find all of these Elements free to download and read here: cup.org/4kEgivL