Kevin Stevens
@neohibolites.bsky.social
Pinned
Kevin Stevens
@neohibolites.bsky.social
· May 27
Biogeography, evolution, and ecology of the ancestral cichlids
This article examines the early evolution and biogeography of cichlids, discussing fossil evidence and the hypotheses regarding their origins. It reviews the debate between Gondwanan vicariance and ma...
cichlidae.com
What do we know about the earliest history of cichlid fishes? Here’s an extended and updated English version of my article on the biogeography and early evolution of cichlids, which I originally published in German in 2020. 🐟 🧪 #cichlid #biogeography #paleontology
cichlidae.com/article.php?...
cichlidae.com/article.php?...
Reposted by Kevin Stevens
And sometimes he has a nice chessboard pattern. 🐟 #fishkeeping
November 25, 2025 at 6:01 PM
And sometimes he has a nice chessboard pattern. 🐟 #fishkeeping
Reposted by Kevin Stevens
Every year around Thanksgiving, I see tons of grad students post heartbreaking messages on social media about how their loved ones don’t understand or support their decision to study what seems like something pointless or silly.
Perhaps my American Scientist essay can help!
🧪🌎🦑 #SciComm
Perhaps my American Scientist essay can help!
🧪🌎🦑 #SciComm
“Why Are We Funding This?”
Long-standing myths about “silly science” have contributed to the reckless slashing of government-supported research.
www.americanscientist.org
November 25, 2025 at 6:42 PM
Every year around Thanksgiving, I see tons of grad students post heartbreaking messages on social media about how their loved ones don’t understand or support their decision to study what seems like something pointless or silly.
Perhaps my American Scientist essay can help!
🧪🌎🦑 #SciComm
Perhaps my American Scientist essay can help!
🧪🌎🦑 #SciComm
Reposted by Kevin Stevens
fed the tank some bloodworms and now it's full of piggies. oink oink
November 25, 2025 at 4:57 AM
fed the tank some bloodworms and now it's full of piggies. oink oink
Reposted by Kevin Stevens
#LIBresearch: New work on cichlid fishes shows how different sex-chromosome systems drive males & females to evolve distinct gene-activity patterns - shaping how their traits diverge.
→ doi.org/10.1111/mec....
@astridboehne.bsky.social
©Adobe Stock, David
#Genomics #SexChromosomes
→ doi.org/10.1111/mec....
@astridboehne.bsky.social
©Adobe Stock, David
#Genomics #SexChromosomes
November 25, 2025 at 4:46 PM
#LIBresearch: New work on cichlid fishes shows how different sex-chromosome systems drive males & females to evolve distinct gene-activity patterns - shaping how their traits diverge.
→ doi.org/10.1111/mec....
@astridboehne.bsky.social
©Adobe Stock, David
#Genomics #SexChromosomes
→ doi.org/10.1111/mec....
@astridboehne.bsky.social
©Adobe Stock, David
#Genomics #SexChromosomes
And sometimes he has a nice chessboard pattern. 🐟 #fishkeeping
November 25, 2025 at 6:01 PM
And sometimes he has a nice chessboard pattern. 🐟 #fishkeeping
Reposted by Kevin Stevens
🎓 Looking for an exciting PhD project?
Check out some amazing opportunities on our page! 🌍🔬
👉 palass.org/phd-opportun...
Have a PhD opportunity to share?
You can easily add it using the “Add a PhD Opportunity” button! 📝✨
#phd #phdlife #advertising #palass
Check out some amazing opportunities on our page! 🌍🔬
👉 palass.org/phd-opportun...
Have a PhD opportunity to share?
You can easily add it using the “Add a PhD Opportunity” button! 📝✨
#phd #phdlife #advertising #palass
November 24, 2025 at 7:03 PM
🎓 Looking for an exciting PhD project?
Check out some amazing opportunities on our page! 🌍🔬
👉 palass.org/phd-opportun...
Have a PhD opportunity to share?
You can easily add it using the “Add a PhD Opportunity” button! 📝✨
#phd #phdlife #advertising #palass
Check out some amazing opportunities on our page! 🌍🔬
👉 palass.org/phd-opportun...
Have a PhD opportunity to share?
You can easily add it using the “Add a PhD Opportunity” button! 📝✨
#phd #phdlife #advertising #palass
Reposted by Kevin Stevens
Saving the C-Gar!
“Cuban scientists race against time to save fish as old as the dinosaurs”
LINK: www.reuters.com/business/env...
“Cuban scientists race against time to save fish as old as the dinosaurs”
LINK: www.reuters.com/business/env...
November 24, 2025 at 4:26 PM
Saving the C-Gar!
“Cuban scientists race against time to save fish as old as the dinosaurs”
LINK: www.reuters.com/business/env...
“Cuban scientists race against time to save fish as old as the dinosaurs”
LINK: www.reuters.com/business/env...
Reposted by Kevin Stevens
The cichlid crew while feeding. 🐟 #photography #fishkeeping
November 17, 2025 at 5:25 PM
The cichlid crew while feeding. 🐟 #photography #fishkeeping
Reposted by Kevin Stevens
I'm recruiting a new master's student for fall 2026 in my lab at Northern Michigan University @bionmu.bsky.social ! Students with interests in evolution of freshwater fish are encouraged to apply. Please see our lab website lizmandeville.github.io and the attached advertisement for more information.
Mandeville Lab
Fish are so delightfully weird. We study the evolutionary genetics and ecology of freshwater fishes, plus a few more things, at Northern Michigan University
lizmandeville.github.io
November 24, 2025 at 2:35 PM
I'm recruiting a new master's student for fall 2026 in my lab at Northern Michigan University @bionmu.bsky.social ! Students with interests in evolution of freshwater fish are encouraged to apply. Please see our lab website lizmandeville.github.io and the attached advertisement for more information.
Reposted by Kevin Stevens
A lot of good stuff in here, particularly the annoyance with paleoanthropology. Don't get me started on my experiences with anthropologists at the Penn Museum.
For those who don't know what I'm talking about, see Rant #7 here
(Felsenstein Lab) Some rants and diatribes
felsenst.github.io
November 24, 2025 at 4:02 PM
A lot of good stuff in here, particularly the annoyance with paleoanthropology. Don't get me started on my experiences with anthropologists at the Penn Museum.
Reposted by Kevin Stevens
The shrimps are enjoying a zuccini feast! Sorry for the background cackling..... 😅
#aquascaping #shrimpkeeping
#neocaridinashrimp
#aquascaping #shrimpkeeping
#neocaridinashrimp
November 24, 2025 at 2:14 AM
The shrimps are enjoying a zuccini feast! Sorry for the background cackling..... 😅
#aquascaping #shrimpkeeping
#neocaridinashrimp
#aquascaping #shrimpkeeping
#neocaridinashrimp
Reposted by Kevin Stevens
Am Wochenende wurde ein stark verwester Narwal an der Irischen Küste angespült
Sehr ungewöhnlicher Fund
iwdg.ie/narwhal-a-ne...
Sehr ungewöhnlicher Fund
iwdg.ie/narwhal-a-ne...
Narwhal – A new whale species for Ireland washes up in Co Donegal | Irish Whale and Dolphin Group
A species of whale, never before recorded in Ireland, washed up in Co Donegal last weekend. A small 2-3m whale or dolphin was reported to the Irish Whale and Dolphin Group stranded on Sweet Nellies Be...
iwdg.ie
November 24, 2025 at 7:37 AM
Am Wochenende wurde ein stark verwester Narwal an der Irischen Küste angespült
Sehr ungewöhnlicher Fund
iwdg.ie/narwhal-a-ne...
Sehr ungewöhnlicher Fund
iwdg.ie/narwhal-a-ne...
Reposted by Kevin Stevens
Huh, so there's at least species of New World killifish that's sometimes protogynous. Now THAT'S cool! 🌍🌿⚒️🐟
Alternative social and reproductive niches linked to intra-sexual color variation in a facultatively protogynous North American annual killifish, Millerichthys robustus - Scientific Reports
Scientific Reports - Alternative social and reproductive niches linked to intra-sexual color variation in a facultatively protogynous North American annual killifish, Millerichthys robustus
www.nature.com
November 24, 2025 at 12:57 PM
Huh, so there's at least species of New World killifish that's sometimes protogynous. Now THAT'S cool! 🌍🌿⚒️🐟
Reposted by Kevin Stevens
Large brains are useful when conditions favor plastic behaviors, smaller brains when reliable behaviors increase fitness. Or: why are there so many minnows?
November 23, 2025 at 8:48 PM
Large brains are useful when conditions favor plastic behaviors, smaller brains when reliable behaviors increase fitness. Or: why are there so many minnows?
Reposted by Kevin Stevens
Working on invertebrate #paleoart at the moment, knowing I'm probably making mistakes despite best efforts, consulting primary literature etc. Inverts are much like fossil plants: there are few accessible resources on their appearance so we must wing it, or go down deep rabbit holes to restore them.
November 24, 2025 at 1:56 PM
Working on invertebrate #paleoart at the moment, knowing I'm probably making mistakes despite best efforts, consulting primary literature etc. Inverts are much like fossil plants: there are few accessible resources on their appearance so we must wing it, or go down deep rabbit holes to restore them.
Reposted by Kevin Stevens
JOB OPPORTUNITY: Assistant Professor - Ocean Biogeochemical Modeller (University of Hawaii)
Full details here: www.schooljobs.com/careers/hawa...
#coralreefs #academia #assistantprofessor #hawaii #biogeochemical #modeller #marinebiology
Full details here: www.schooljobs.com/careers/hawa...
#coralreefs #academia #assistantprofessor #hawaii #biogeochemical #modeller #marinebiology
November 23, 2025 at 8:30 AM
JOB OPPORTUNITY: Assistant Professor - Ocean Biogeochemical Modeller (University of Hawaii)
Full details here: www.schooljobs.com/careers/hawa...
#coralreefs #academia #assistantprofessor #hawaii #biogeochemical #modeller #marinebiology
Full details here: www.schooljobs.com/careers/hawa...
#coralreefs #academia #assistantprofessor #hawaii #biogeochemical #modeller #marinebiology
Reposted by Kevin Stevens
Adult brains of human (A), Mormyrid (B), pigeon (C), and goldfish (D) are shown in lateral view (rostral to the left). Each animal has differentially developed specific parts of the brain.
www.researchgate.net/publication/...
www.researchgate.net/publication/...
November 24, 2025 at 1:37 AM
Adult brains of human (A), Mormyrid (B), pigeon (C), and goldfish (D) are shown in lateral view (rostral to the left). Each animal has differentially developed specific parts of the brain.
www.researchgate.net/publication/...
www.researchgate.net/publication/...
Reposted by Kevin Stevens
The title of this paper is silly, these are statistical correlations not evolutionary explanations. The trends are dwarfed by the exceptions (residuals), like the small brains of tunas and large brains of mormyrid fishes.
November 23, 2025 at 8:04 PM
The title of this paper is silly, these are statistical correlations not evolutionary explanations. The trends are dwarfed by the exceptions (residuals), like the small brains of tunas and large brains of mormyrid fishes.
Reposted by Kevin Stevens
What do we know about the earliest history of cichlid fishes? Here’s an extended and updated English version of my article on the biogeography and early evolution of cichlids, which I originally published in German in 2020. 🐟 🧪 #cichlid #biogeography #paleontology
cichlidae.com/article.php?...
cichlidae.com/article.php?...
Biogeography, evolution, and ecology of the ancestral cichlids
This article examines the early evolution and biogeography of cichlids, discussing fossil evidence and the hypotheses regarding their origins. It reviews the debate between Gondwanan vicariance and ma...
cichlidae.com
May 27, 2025 at 5:53 PM
What do we know about the earliest history of cichlid fishes? Here’s an extended and updated English version of my article on the biogeography and early evolution of cichlids, which I originally published in German in 2020. 🐟 🧪 #cichlid #biogeography #paleontology
cichlidae.com/article.php?...
cichlidae.com/article.php?...
Reposted by Kevin Stevens
Parental investment and body temperature explain encephalization in vertebrates
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Parental investment and body temperature explain encephalization in vertebrates | PNAS
The systematic variation in relative brain size among vertebrate classes remains poorly
understood. Here, based on the expensive brain hypothesis, ...
www.pnas.org
November 23, 2025 at 5:41 PM
Parental investment and body temperature explain encephalization in vertebrates
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Reposted by Kevin Stevens
Reposted by Kevin Stevens
Book Cover of the Day:
November 23, 2025 at 9:45 AM
Book Cover of the Day:
Reposted by Kevin Stevens
Hoylake & West Kirby War Memorial with sculptures by Charles Sergeant Jagger, a frontline soldier wounded in action. The sculptures are dark, intense: a brooding soldier and a mourning figure with a crown of thorns. Away from the busy street, this monument, rich in detail, depicts a deep wound
November 23, 2025 at 10:41 AM
Hoylake & West Kirby War Memorial with sculptures by Charles Sergeant Jagger, a frontline soldier wounded in action. The sculptures are dark, intense: a brooding soldier and a mourning figure with a crown of thorns. Away from the busy street, this monument, rich in detail, depicts a deep wound
Reposted by Kevin Stevens
