I am recruiting PhD students for my new lab housed in the Sam Noble Museum at University of Oklahoma! If you are interested in fish macroevolution, geometric morphometrics, specimen-based research & phylogenomics please reach out. More info here: fishdiversitylab.weebly.com Please share widely!!!

Here is every native freshwater fish species of the Azores islands. 1) The European eel. That is it! Found this individual on São Miguel Island, Azores 🇵🇹 On many remote islands only diadromous species can access the freshwater habitats resulting in low species diversity.

Stepwise loss of complexity in hagfish eyes prior to deep sea colonization royalsocietypublishing.org/rsbl/article...

#ERGAReads | Whole Genome Sequencing Reveals How Plasticity and Genetic Differentiation Underlie Sympatric Morphs of Arctic Charr 🧬 🐟️ onlinelibrary.wiley.com/doi/10.1111/... #genomes #ArcticCharr #plasticity #fisheries #bioeconomy #morphs #charr @evobiouppsala.bsky.social

There are more individuals of the deep-sea fish Cyclothone than any other vertebrate genus, maybe as many as one million billion. Distinctively ornamented ichthyoliths place the origin of Cyclothone in the greenhouse world of the early Eocene, ~55.6 Ma. royalsocietypublishing.org/rspb/article...

Crispim JL, P Argüello, GSC Silva, C Oliveira, KR Luckenbill & MH Sabaj, 2026. After eight decades: a new species of Pterobunocephalus (Siluriformes: Aspredinidae) from the upper Putumayo, Napo and Pastaza rivers, Ecuador. Neotropical Ichthyology 24:e250162.🐟🧪 doi.org/10.1590/1982...

Happy to share with you the completely updated assessment of the conservation status of Europe’s 559 known freshwater fish species. Not happy to report that nearly 50% of them are threatened. ▶️ Here is the #IUCN report 👇 sohub.io/nvoz

New paper led by @taylorblack.bsky.social shows AVT modulates aggression in darter lineages with nest site territoriality and paternal care but elicits no behavioral response in a species that secondarily lost territoriality and care www.sciencedirect.com/science/arti...

Once-Adventurous Salmon Can’t Believe She Ended Up Moving Back To Birthplace, Having A Bunch Of Kids https://theonion.com/once-adventurous-salmon-can-t-believe-she-ended-up-movi-1825827223/

Pleased to share a new phylogeny for the airbreathing or walking catfishes from the family Clariidae - part of my postdoctoral work at the AMNH in collaboration with Tobit Liyandja and Melanie Stiassny: www.sciencedirect.com/science/arti...

Tiny shellear fish in central Africa scale a 50-foot vertical waterfall using suction cups and tiny hooks. This convergent evolution places them with some island gobies and Brazilian bumblebee catfish, who all do world class bouldering. 🐟🌍 phys.org/news/2026-04...

Finally is the paper where we present the unique genomic architectures of the Arctic codfishes out!! Nice work by @gadus-sivus.bsky.social and co-authors … @biovitenskap.bsky.social @unioslo-cees.bsky.social link.springer.com/article/10.1...

Aging killifish show systemic inflammation and accumulating DNA damage in progenitor-like immune cells, offering a window into the evolutionarily conserved mechanisms of vertebrate immune aging. Great work from Gabriele, @mdonertas.bsky.social, and the whole team. www.nature.com/articles/s43...

onlinelibrary.wiley.com/doi/10.1111/... Robin's new tool - looks nifty!

Reproductive fluids enabling cryptic female choice of paternity do not induce concomitant ejaculate-mediated paternal effects in embryos of hybridizing salmonid fishes: Lantiegne et al. 2026 @memorialu.bsky.social doi.org/10.1093/jeb/...

Cool paper, turning evolutionary theory on its head - gene conversion overcomes the cost of asexual reproduction… Gene conversion empowers natural selection in a clonal fish species www.nature.com/articles/s41...

Polypterids (bichirs + ropefish) are the sister lineage of all other living ray-finned fishes. Restricted to Africa today, fragmentary fossils show they inhabited South America until at least the Paleocene. Now Late Cretaceous finds add Madagascar to the list: www.sciencedirect.com/science/arti...

So sad 📉 - they're just gone. www.dailykos.com/stories/2026...

#paperalert #fishes Two closely related minnow ( #Phoxinus ) species share the same rivers — and sometimes even hybridise. But new research shows they've evolved completely different ways of determining sex. 🐟🧬 Lead author PhD student @thetemi.bsky.social @leibnizlib.bsky.social

Contrasting diversification and invasion histories of bivalves to the deep sea: "...evolutionary pathways to deep-sea endemicity are more often shaped by multiple, independent events than by in situ diversification" royalsocietypublishing.org/rspb/article... 🧪 ⚒️ #Paleobio #EvoBio #Macroecology

I'm recruiting a Ph.D. student for Fall 2026. Interested in comparative studies and trait evolution in fishes? Send me an email with a CV and research interests. Please take a look at my website (jcorush.github.io ) for more information about my research. #hybridization #minnows #mudskippers

New from #NearLab The role of ecology in allopatric speciation of darters in the Central Highlands, USA shorturl.at/YEmxH

NEWS from Ohio State Fish Division: You can now search our 6,000-tissue collection on our website! 🐟 mbd.osu.edu/collections/...

NEW METHODS ARTICLE: Phylogenetic GLMMs open doors to study evolution of discrete traits. We show how binary models extend to ordinal & nominal traits, using bird data, and provide tutorials to make these methods accessible to evolutionary biologists: doi.org/10.1093/jeb/... Mizuno et al.

@jcorush.bsky.social is looking for a PhD student

I'm recruiting a Ph.D. student for Fall 2026. Interested in comparative studies and trait evolution in fishes? Send me an email with a CV and research interests. Please take a look at my website (jcorush.github.io ) for more information about my research. #hybridization #minnows #mudskippers

The Klamath River is flowing free again. RES and local Indian Tribes are restoring habitat, renewing cultural ties, and leading the largest dam removal in history. 🎥 Watch the film + explore the series: contentwithpurpose.co.uk/afs/tomorrow...

Roussel, Suh, @fjruizruano.bsky.social & @amdioncote.bsky.social characterized TE content in naturally occurring killifish hybrids, finding higher TE load and accumulation of Neptune subfamilies in hybrids. 🔗 doi.org/10.1093/molbev/msaf266 #evobio #molbio #TEsky

A new report reveals that fish and wildlife conservation generates substantial economic benefits. Federal, state, local, and nonprofit contributions combined contributed $115.8 billion in total economic activity and supported over 575,000 jobs nationwide. Read more: fisheries.org/2025/11/new-...

@snbogan.bsky.social @notothentoma.bsky.social @scotthotaling.bsky.social @paulbfrandsen.bsky.social et al. explore the evolution of type III antifreeze proteins in deep sea zoarcoid fishes. 🔗 doi.org/10.1093/molbev/msaf219 #evobio #molbio

New paper on deep-sea fish diversity out now in @sse-evolution.bsky.social, with @cmartinez.bsky.social and @sarahtfried.bsky.social academic.oup.com/evolut/advan...

There's more to fish than the fillet, and we need your ideas on how to use it! Submit your suggestions on how to use the whole fish to the 100% Wisconsin Fish contest for a chance to win a #GreatLakes prize pack. www.seagrant.wisc.edu/news/submit-...

Non-anthropogenic cosmopolitan species ranges are scarce Mugil cephalus, traditionally considered a (quasi)cosmopolitan diadromous fish species, is now shown to comprise some 15 different lineages deserving formal species description www.sciencedirect.com/science/arti...

Congratulations to @fishsciencedude.bsky.social and fellow co-authors for an important new article on advancing Diversity, Equity, Inclusion & Accessibility in aquatic sciences. www.sciencedirect.com/science/arti... @iaglr.bsky.social @waynestateresearch.bsky.social

Xing et al. study sex chromosome evolution in two species of halfbeak fish, identifying a large sex-linked ZW region in Hyporhamphus sajori and a small sex-linked region on a different chromosome, with male heterogamety, in H. intermedius. 🔗 doi.org/10.1093/molbev/msaf151 #evobio #molbio

Super excited to share our new paper investigating convergence across planktivorous fishes and assessing the impact of ancestry and light environment led by Dr Jen Hodge @fishncurious.bsky.social and including most members of the lab past and present academic.oup.com/sysbio/advan...

Some of you may be interested in this: academic.oup.com/sysbio/advan...

**Rapid Response Bridge Funding Program** -- $25,000 grants earmarked for early-career researchers whose NSF-funded research on STEM and education has just been terminated. www.spencer.org/grant_types/... hub.jhu.edu/2025/04/28/j... Thanks @lizneeley.bsky.social !

Pleased to see this publication led by @jcorush.bsky.social that I helped out with on the role of factors driving genetic structure of mottled sculpin in Illinois, where it is a state-threatened fish species. link.springer.com/article/10.1...

New fish book alert! On this #FishFriday, "Fishes of the Chicago Region" was just released. Detailed info on species distributions & natural history observations for >150 species in SE Wisconsin, NE Illinois, northern Indiana, and SW Michigan. Check it out... www.amazon.com/Fishes-Chica...

Some microphagous fishes have a unique pocket-like throat structure, epibranchial organ (EBO), that helps gather tiny food particles. New study of 13 species reveals diverse EBO anatomy, weak phylogenetic ties & possible link to diet Evans et al: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...

Polar bears and their lower-latitude cousins—brown bears—have a complicated past! Genomes from a >115,000 year old polar bear and 65 modern bears reveal that although polar bears and brown bears began diverging >1 mya, they hybridized up until ~200 kya. #2025MMM doi.org/10.1073/pnas.2200016119

New study by @tribblelab.bsky.social @jimarcor.bsky.social @marcialescudero.bsky.social Michael May, Rosana Zenil-Ferguson and myself just out: Introduces a novel HiSSE chromosome model and demonstrates the importance of chrom. evol. in #sedge diversity. nph.onlinelibrary.wiley.com/doi/10.1111/...

Let´s form a community of conservation geneticists here - I started with some people I know, but there are likely to be many more... I can happily add them to this list go.bsky.app/VMqVSAi

For scientists interested in large lakes of the world. Contact us if you'd like to be added. Space still available.

Genomics, Evolution, and More by @jlsteenwyk.bsky.social bsky.app/starter-pack...

Pleased to share our new paper studying the adaptive diversification of body shape in catfishes of the superfamily Doradoidea and exploration of the evolution of modularity and integration. DOI: doi.org/10.1643/i202... 50-day free access link: www.ichthyologyandherpetology.org/ihbjbd/bxi20...

Check out our new paper, led by @asantaquiteria.bsky.social ! Awesome fish diversity and #evolution, phylogenomics and evolutionary patterns of seahorses, goatfishes, dragonets, flying gurnards (Syngnatharia) across oceans. 🐟🧪🦑🌎 www.journals.uchicago.edu/doi/10.1086/...