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zebrafishrock.bsky.social
Zebrafish Rock!
@zebrafishrock.bsky.social
3.9K followers 1K following 2.1K posts
Award-winning home tank for all things zebrafish! Learn more about us and our Slack tankspace at our website: linktr.ee/zebrafishrock 🐟🎸
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zebrafishrock.bsky.social
Axonal pathfinding of zebrafish retinal ganglion cells forms the optic nerve. Credit to Dr. Matthew Bostock @houartlab.bsky.social. #ZebrafishZunday 🧪
November 16, 2025 at 8:30 PM
zebrafishrock.bsky.social
#ZebrafishZunday: Cytoplasmic (or ooplasmic) streaming leads to the segregation of embryo from yolk granules. Credit to @shamipourshayan.bsky.social & @heisenbergcplab.bsky.social. 🧪
November 16, 2025 at 9:31 AM
zebrafishrock.bsky.social
#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... 🧪
Image of Professor George Streisinger in his lab at the University of Oregon. He is standing in front of several fish tanks with lots of cables and heaters plugged in. Credit/Permissions to Mate Varga in https://www.liebertpub.com/doi/10.1089/zeb.2017.1531
November 14, 2025 at 4:23 PM
zebrafishrock.bsky.social
#ZebrafishFunFacts: Known to hobbyists as the leopard Danio, TL or Tüpfel longfin #zebrafish consist of two alleles (leo and lof). leo is a gap junction protein (ncbi.nlm.nih.gov/pmc/articles...), while lof is caused by upregulation of a K+ channel (journals.biologists.com/dev/article/...). 🧪 1/2
Image of a TL adult zebrafish. Note the patchy spots and long fins. Credit to Alamy.
November 13, 2025 at 9:03 AM
zebrafishrock.bsky.social
Over the last year, our website has had visitors from an outstanding 53 countries! With links to our Slack tankspace sign-up form, interviews of ZR!'s creator @kevinthiessen.bsky.social, and our Bioinformatics Bootcamp @the-node.bsky.social, do check it out!

🔗: linktr.ee/zebrafishrock #RockOn 🧪
World map of IP addresses that have visited the Zebrafish Rock! website over the last year. There are lots of dots on the Eastern US coast as well as in Europe. In total, 6 continents are represented.
November 11, 2025 at 8:39 AM
zebrafishrock.bsky.social
Fluorescent micrograph of the enteric nervous system of a Pachon/surface hybrid cavefish. Credit to @pavaniperera.bsky.social. #ZebrafishZunday 🧪
Side view of a cavefish embryo with several features of the intestine marked by different colors. Anterior to left.
November 9, 2025 at 5:09 PM
zebrafishrock.bsky.social
Make #ZebrafishZunday part of your Sunday routine! 🧪

Science 🤝 Art 🤝 #Zebrafish
Girl in red dress meme. Science feed holding hand of #FluorescenceFriday checking out #ZebrafishZunday
November 9, 2025 at 1:25 PM
zebrafishrock.bsky.social
Blood flow in a transparent zebrafish embryo. Credit to @damiandn.bsky.social. #ZebrafishZunday 🧪
November 9, 2025 at 8:05 AM
zebrafishrock.bsky.social
Let's talk about sex! Research suggests natural zebrafish have WZ/ZZ sex chromosomes as evidenced by a single sex-linked region on chromosome 4. This trait is lost in laboratory fish as sex is determined by multiple genes, with influences from the environment. #ZebrafishFunFacts 🧪
Image of two zebrafish (Danio rerio). The top is a male with a slender, yellow body. The bottom is a female, which has an egg-bearing belly. Image credit to Vetmeduni Vienna/Zala.
November 8, 2025 at 4:40 PM
zebrafishrock.bsky.social
#ZebrafishFunFacts: Using the discarded slide film from his doctoral research, Professor and amateur artist Michael Barresi created a mosaic of an adult #zebrafish.

Learn about his upcoming art installation on human embryos called 'Using Art to Demystify Science': www.smith.edu/news-events/... 🧪
Image of an adult zebrafish using discarded film slides. There are stripes of dark brown and blue capturing the essence of adult zebrafish
November 7, 2025 at 11:24 AM
zebrafishrock.bsky.social
From @rogerslabucd.bsky.social on Twitter/X: "Hot air balloon! 100%"
Upside-down view of the image posted previously by Zebrafish Rock! of a zebrafish embryo stained with an in situ probe. It looks like a hot air balloon from this angle. Image of two white hot air balloons. Credit to Alamy
November 7, 2025 at 9:07 AM
zebrafishrock.bsky.social
Your favorite guessing game has returned to social media! Here's how to play #GuessThatISH:

We present a pic of a #zebrafish embryo that has been stained using an unknown in situ probe by Thisse et al.

You tell us what it looks like! The catch? WRONG ANSWERS ONLY!

Let's play! #ThisseThursday 🧪
Top view of an early stage zebrafish embryo that has been stained with an unknown in situ hybridization probe. Head to the left. Big opaque yolk to the right. Credit to Thisse & Thisse et al.
November 6, 2025 at 2:22 PM
zebrafishrock.bsky.social
Slow-mo video of zebrafish mating. Credit to
@zebrafish007.bsky.social. #ZebrafishZunday 🧪
November 2, 2025 at 8:14 AM
zebrafishrock.bsky.social
The first international workshop that focused on #zebrafish was convened in 1990 in Eugene, Oregon. Sponsored by NIH and NSF, the gathering of ∼40 scientists sought to evaluate the research potential of the tiny fish. Today, nearly 1,800+ zebrafish labs exist worldwide. #ZebrafishFunFacts 🧪
Rumoured photo from the first international workshop on zebrafish at the university of oregon. Image credit to Cecilia Moens. How many people can you spot?
November 1, 2025 at 12:00 PM
zebrafishrock.bsky.social
Happy Halloween to all the terrifying teleost tricksters out there! Credit original art to artist and illustrator Priyanka Oberoi🎃 🧪
Image of a zebrafish wearing a witches’ hat and riding a broom. Original artwork by Priyanka Oberoi. Available on @redbubble. https://www.redbubble.com/people/priyankaoberoi/shop
October 31, 2025 at 9:01 AM
zebrafishrock.bsky.social
Diamond-Blackfan Anemia (DBA) is a rare human disorder affecting red blood cell production, which often appears due to mutations in ribosomal protein, RPS19. To clarify its role in DBA, researchers made a rps19 knockout #zebrafish, which had impaired haematopoiesis. #KnowYourZDM 🧪
Figure 1 Zebrafish DBA models. Wild-type embryos show a high density of red blood cells (WT), whereas the blood production is drastically reduced in the rps19 knockdown (KD) and knockout (KO) embryos, as indicated by the absence of hemoglobin stained cells (lower panels). These embryos also display developmental deformities in head and tail regions (arrowheads). The abnormal phenotypes were rescued by injection of rps19 mRNA but not rescued by mRNA with patient type mutations in the knockdown embryos [14]. Credit to Uechi et al 2019
October 30, 2025 at 6:54 PM
zebrafishrock.bsky.social
#KnowYourZDM: Humans and #zebrafish carrying mutations in VEGFC or its receptor (FLT4) have defects in the formation of their lymphatic systems, which are important for draining lymph back into the circulation system.  As a result, these individuals display severe #lymphedema. 🧪
Humans bearing mutations in vascular endothelial growth factor C (VEGFC) or its receptor tyrosine kinase (FLT4) have defects in the formation of their lymphatic system, which is important for draining interstitial fluid back into the circulatory system. As a consequence, these patients display severe lymphedema (bottom left). In zebrafish, we have generated mutations in vegfc and flt4, both of which are conserved between zebrafish and humans. Like humans, zebrafish larvae also display lymphedema due to a failure to form a complete lymphatic system (bottom right). Credit image and text to Prof. Nathan Lawson @LawsonZFLab https://www.umassmed.edu/lawson-lab/zebrafishmodel/disease-models/
October 26, 2025 at 5:31 PM
zebrafishrock.bsky.social
Endocardium, cells lining the heart chambers, in the beating heart of a two-day-old transgenic #zebrafish. Credit to @anjaliesch.bsky.social & Nikon Small World Competition. #ZebrafishZunday 🧪
October 26, 2025 at 8:06 AM
zebrafishrock.bsky.social
If you've used @zfinmod.bsky.social, you may have noticed in situ expression data by Thisse et al. This comprehensive dataset was generated by Profs. Christine and (late) Bernard Thisse. In total, 8,400+ genes are described in 29,000+ figures at different stages. #ZebrafishFunFacts #ThisseThursday 🧪
Lateral view of a two-day-old zebrafish embryo that has been stained with cb476 in situ hybridization probe. Many of the structures have been labelled with the corresponding tissue name.
October 25, 2025 at 8:09 AM
zebrafishrock.bsky.social
Want an easy way to support your model organism databases? Cite them!

Depending on the #zebrafish data you retrieve from ZFIN, you can show your support by using one of the formats below 🙏 🧪 #ZebrafishFunFacts
Citing ZFIN. We recommend the following formats for citing ZFIN in publications. For a general reference to the database, cite Bradford et al. 2022. For citing a specific entry in ZFIN: [Type of] data for this paper were retrieved from ZFIN, University of Oregon, Eugene, OR 97404-5274; URL: http://zfin.org/; [the date you retrieved the data cited].
October 22, 2025 at 4:32 PM
zebrafishrock.bsky.social
On this day seven years ago, I signed back up for social media. It was bittersweet as my previous experiences affected my mental health. But I knew the potential of Zebrafish Rock! Now spread across multiple platforms, we act as a comprehensive resource for the #zebrafish community. Cheers! -KT
Image of the number 7 with colorful stripes. Taken from Twitter/X.
October 22, 2025 at 6:44 AM
zebrafishrock.bsky.social
Colorful collage of abnormal larval zebrafish hearts. Credit to @dorotheeb.bsky.social. #ZebrafishZunday 🧪
multi-color labeled zebrafish heart with mosaic expression of diverse myl7:color plasmids. Abnormal atrium due to wnt8a overexpression.
October 19, 2025 at 1:24 PM
zebrafishrock.bsky.social
Zebrafish embryo undergoing gastrulation. Credit to Dr. Gopi Shah at EMBL. #ZebrafishZunday 🧪
October 19, 2025 at 9:24 AM
zebrafishrock.bsky.social
Don’t forget the umlaut! Did you know the wild-type strain ‘Tu’ came from a pet shop in the German town of Reutlingen, a nearby city of Tübingen? This area was one of the sites of “The Big Screen” co-led by Christiane Nüsslein-Volhard in the 1990s. #ZebrafishFunFacts @maxplanckcampus.bsky.social 🧪
Image of downtown Tuebingen near the river. There are quaint German houses that are painted and boats on the river. Credit image to Kevin Thiessen circa 2021
October 18, 2025 at 11:21 AM
zebrafishrock.bsky.social
Celestial Pearl Danio (Danio margaritatus) became an instant hit on the aquarium trade for its vibrant color. Commonly referred to as the Galaxy rasbora, Myanmar banned exports of the fish in 2007 due to its popularity. Now, the fish is captive-bred for hobbyists. #TeleostTalk 🧪
Image of a galaxy rasbora (Celestial Pearl Danio) with vibrant blue and orange markings. Image credit to www.aquariumcoop.com
October 17, 2025 at 9:27 AM