Kevin Stevens
@neohibolites.bsky.social
📤 489
📥 611
📝 424
Cichlid enthusiast and paleontologist.
https://www.researchgate.net/profile/Kevin-Stevens-2
pinned post!
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?...
loading . . .
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...
https://cichlidae.com/article.php?id=449
6 months ago
0
26
8
reposted by
Kevin Stevens
The cichlid crew while feeding. 🐟
#photography
#fishkeeping
about 4 hours ago
0
9
2
The cichlid crew while feeding. 🐟
#photography
#fishkeeping
about 4 hours ago
0
9
2
reposted by
Kevin Stevens
Paul D. Taylor
about 18 hours ago
#MolluscMonday
The L.F. Spath collection at the NHM in London includes numerous thin sections through the early growth stages of ammonoids. This crudely photographed example is of a Cretaceous ammonite.
4
123
29
reposted by
Kevin Stevens
Paul D. Taylor
about 14 hours ago
A bonus for
#MolluscMonday
, the first fossil I spotted today in Singapore, a sectioned ammonite on a polished slab of German Jurassic Treuchtlingen Formation used to clad a wall in Changi Airport.
3
38
7
reposted by
Kevin Stevens
Ole Seehausen
about 5 hours ago
Please share the announcement of this new fellowship scheme widely with your students and colleagues
www.linkedin.com/posts/initia...
loading . . .
#initiativeafrique #africaresearch #africaeurope #scientificexchange #researchcollaboration #universityofbern #equitablepartnerships #africanscience #sciencefordevelopment #researchfellowships… | Init...
Initiative Afrique Fellowships — Call 2026 is now open! We are proud to announce the launch of the Initiative Afrique Fellowships, a new funding scheme designed to strengthen the scientific partnersh...
https://www.linkedin.com/posts/initiative-afrique-university-of-bern_initiativeafrique-africaresearch-africaeurope-activity-7396201700006735873-GS0g?utm_medium=ios_app
0
0
1
🐟🧪
add a skeleton here at some point
about 5 hours ago
0
6
3
reposted by
Kevin Stevens
Jack Stack
about 9 hours ago
Very excited to share my exploration of the phylogenetics of early ray-finned fishes, out today in the Anatomical Record! Really busy day but I’ll have more info shortly.
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
loading . . .
An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)
The ray-finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic kno...
https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.70090
1
14
16
reposted by
Kevin Stevens
Jack Stack
about 6 hours ago
Essay on my phylogenetics paper that looks at my next steps as a researcher and paleontology in the 21st century.
open.substack.com/pub/fishhist...
loading . . .
I see dead fishes
Making a history of fishes for the 21st century
https://open.substack.com/pub/fishhistory/p/i-see-dead-fishes?r=2buhg8&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true
0
5
2
reposted by
Kevin Stevens
Ákos T Kovács
1 day ago
Microbial community succession of home aquarium biofilters associated with early establishment of comammox Nitrospira -in
#ISMEComms
from
@joshdneufeld.bsky.social
academic.oup.com/ismecommun/a...
loading . . .
Microbial community succession of home aquarium biofilters associated with early establishment of comammox Nitrospira
Abstract. Nitrification in aquarium biofilters transforms toxic ammonia (NH₃/NH₄+) into less toxic nitrate (NO₃-) via nitrite (NO₂-). Known freshwater aqua
https://academic.oup.com/ismecommun/advance-article/doi/10.1093/ismeco/ycaf212/8323200
0
3
1
natureconservation.pensoft.net/article/1603...
🐟🧪
loading . . .
Rediscovery of a thought to be extinct beauty: a second chance for conservation
Some rivulids are specialized to live in temporary or ephemeral water bodies, and for this reason they are known as annual or seasonal fishes. The fact that these seasonal species inhabit small tempor...
https://natureconservation.pensoft.net/article/160386/
1 day ago
2
15
7
reposted by
Kevin Stevens
Emily Troyer
2 days ago
New fren 🥰
4
27
2
reposted by
Kevin Stevens
Gettin' Fishy With It Podcast
2 days ago
Hey, do ya like Sturgeon? We sure do! Want to learn about how repopulating their native habitats can actually help humans, too? I bet you do! Check out episode 66, with our friend and incredible guest, Dr. Jeff Wyatt! You can find the episode on your podcatcher of choice, right now!
1
3
3
reposted by
Kevin Stevens
George Turner
2 days ago
Amazing development of the genital tassel on the dominant male Oreochromis squamipinnis (Lake Malawi endemic).
0
6
2
reposted by
Kevin Stevens
Some of the other cichlids from my „Pan-African“ aquarium: Paralabidochromis sauvagei, from Lake Victoria, H. sp. „Ruby Green“, a female, Coptodon bythobates, from Lake Bermin in Cameroon. 🐟
#photography
#fishkeeping
add a skeleton here at some point
3 days ago
0
11
3
reposted by
Kevin Stevens
Jelle Reumer 🟥
2 days ago
Een geplukte Archaeopteryx klaar om te worden gebraden
#FossilFriday
0
10
3
reposted by
Kevin Stevens
Holly Anderson
6 days ago
#Ammonite
hunting on Lyme Regis beach with new palaeo friends closed our
#2025SVP
fieldtrip 🥰
0
10
5
reposted by
Kevin Stevens
Jim 🇺🇦
3 days ago
Yoyo loach from one of my aquariums. A freshwater ornamental
#fish
I've had for several years. For
#fishyfriday
.
#fish
#aquarium
#fishkeeping
🐟
1
32
3
reposted by
Kevin Stevens
Lee = MS squared 🐟🌊🏳️⚧️
3 days ago
It's time for
#FishOfTheWeek
and today I want to talk about a really cool fish that has become much maligned (not without reason) in North America. That's right, today we're gonna talk about the so-called Frankenfish. The snakehead 1/7
1
22
9
reposted by
Kevin Stevens
jörg.freyhof
3 days ago
Three weeks, no picture of moth posted by me. Yes, the season is coming to an end, but still some interesting species are still on the wing, as this Asteroscopus sphinx. It came to the light yesterday in Berlin.
#teammoth
,
#moth
,
#stadtnatur
,
#berlinbiodiversity
,
#berlin
,
#urbanbiodiversity
0
7
1
Some of the other cichlids from my „Pan-African“ aquarium: Paralabidochromis sauvagei, from Lake Victoria, H. sp. „Ruby Green“, a female, Coptodon bythobates, from Lake Bermin in Cameroon. 🐟
#photography
#fishkeeping
add a skeleton here at some point
3 days ago
0
11
3
reposted by
Kevin Stevens
Henning
4 days ago
Tonight, the Groningen region in the Netherlands was shaken by a magnitude 3.4
#earthquake
, according to KNMI. This is the biggest eq in the region in the past 6 years. Here's the seismogram from my Raspishake in Herne, Germany, 211 km away from the epicenter. 🧪⚒️
#Geology
@raspishake.bsky.social
2
65
22
reposted by
Kevin Stevens
Haplochromis sp. „Ruby Green“, a threatened species of cichlid from Uganda. A close relative of the cichlids of Lake Victoria, Africa‘s largest lake. 🐟
#photography
#fishkeeping
#conservation
4 days ago
0
15
4
reposted by
Kevin Stevens
Angie
23 days ago
the subtle green/yellow iridescence on my penguin tetras is so nice
0
9
2
reposted by
Kevin Stevens
Hannah Thomasy
4 days ago
This is an Eastern Cape giant cycad. This specimen at Kew Gardens is the world's oldest potted plant* & it is older than the United States. I found this oddly comforting? Certain systems seem deeply entrenched & unchangeable but in reality there are houseplants that have been around longer.🧪🌿
3
82
33
reposted by
Kevin Stevens
Emily Troyer
4 days ago
A snail appreciation post. I've been collecting longitudinal population data on my rabbit snail population since I got George & Gracie in early 2020. They went on to have many children and today the population is still going strong, although slightly declining as the snails enter old age.
0
34
2
reposted by
Kevin Stevens
C.pedrielli.ph
4 days ago
0
6
1
reposted by
Kevin Stevens
Martin Genner
5 days ago
JOB OPPORTUNITY! Senior Researcher in Freshwater Environmental Genetics to work with us on the ERC REFRESH Programme studying the role of dissolved organic matter in freshwater ecosystems
shorturl.at/zOajg
@pennyjohnes.bsky.social
@bristoluni.bsky.social
@ercrefresh.bsky.social
@danread.bsky.social
0
4
6
Haplochromis sp. „Ruby Green“, a threatened species of cichlid from Uganda. A close relative of the cichlids of Lake Victoria, Africa‘s largest lake. 🐟
#photography
#fishkeeping
#conservation
4 days ago
0
15
4
reposted by
Kevin Stevens
Claus Wilke
4 days ago
My department at UT Austin is looking to hire an Assistant Professor in Evolutionary Biology, broadly defined. Feel free to reach out to me with any questions you may have.
apply.interfolio.com/177547
loading . . .
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
https://apply.interfolio.com/177547
1
39
66
reposted by
Kevin Stevens
Crystal Rogers, PhD
5 days ago
Are you a postdoc or Asst. Prof on the job market? Check out our listing and consider applying! The search is very broad and it’s in a great department, location, university! Even with the crazy schedule that comes with being a PI- I love my job
@ucdavis.bsky.social
@ucdavisvetmed.bsky.social
!
add a skeleton here at some point
1
19
23
reposted by
Kevin Stevens
jörg.freyhof
5 days ago
My observation of the day: Carabus granulatus heavily colonised by the mite Iphidosoma fimetarium. Naturally, I had no idea which mite this might be - iNaturalist owen_seeman provided the identification. 👍 iNaturalist
#stadtnatur
,
#berlinbiodiversity
,
#berlin
,
#urbanbiodiversity
0
4
1
reposted by
Kevin Stevens
Dr Alex Dunhill
5 days ago
Want to do a PhD linking palaeontology, ecological modelling and polar ecosystems? Look no further than this NERC GW4+ DLTP funded project with
@rowanwhittlebas.bsky.social
at
@bas.ac.uk
&
@bristolpalaeo.bsky.social
and others (inc me).
www.bristol.ac.uk/media-librar...
loading . . .
https://www.bristol.ac.uk/media-library/sites/earthsciences/documents/phd-projects/2026-start/gw4dltp-2026-whittle-schmidt-the-effects-of-climate-cooling-on-the-evolution-of-antarctic-eocene-seafloor-ecosystems-final.pdf
0
5
17
reposted by
Kevin Stevens
Earthy Waters
6 days ago
My baby
#sparklinggourami
all grown up in my moms
#fishtank
. They are so much bigger than their parents.
0
6
1
reposted by
Kevin Stevens
John P. Friel, Ph.D.
6 days ago
#Museums
had a rough 2025: New AAM Report shows lower attendance, lost grants, and less money. 🙁
loading . . .
Museums had a rough 2025: Report shows lower attendance, lost grants, less money
The American Alliance of Museums put out its annual industry snapshot and it's not great. Trump's targeting of museum programming had downstream effects and put a "chill on corporate philanthropy."
https://www.npr.org/2025/11/11/nx-s1-5604385/museums-attendance-donations-grants-trump
0
10
3
reposted by
Kevin Stevens
Ligus
6 days ago
old fish skech ... I think I haven't shared this one here 🐟🐡
4
86
18
reposted by
Kevin Stevens
Dr Mark D. Scherz
11 days ago
Today we described three new toad species that give birth to fully formed toadlets, from the Eastern Arc Mountains of Tanzania! 🇹🇿🧪🐸
vertebrate-zoology.arphahub.com/article/1670...
3
147
68
reposted by
Kevin Stevens
Shaun Killen
13 days ago
Our new study: territorial cichlids ramped up metabolic rate around conspecifics, while cardinal tetras showed little change. And only in tetras did individual sociability relate to metabolic rate. Energetic consequences of “social living” depend on social system.
link.springer.com/article/10.1...
0
12
4
reposted by
Kevin Stevens
Ethological Society
10 days ago
🧪ETHOLOGY: Holtz et al. use a computer vision pipeline to uncover subtle differences in movement patterns in Lake Malawi cichlids — showing how behavior may help maintain biodiversity beyond diet differences. 🐟📹🤖 It's
#OpenAccess
:
doi.org/10.1111/eth....
#Cichlids
#ComputerVision
#MachineLearning
loading . . .
Cryptic and Ecologically Relevant Locomotor Activity Patterns in Lake Malawi Cichlids Revealed Through Computer Vision Pipeline
Cryptic behavioral variation revealed by computer vision pipeline. Two closely related cichlid species show differences in patterns of tank usage (heatmaps) as well as the number and duration of stop...
https://doi.org/10.1111/eth.70027
1
3
2
reposted by
Kevin Stevens
Sebastian Höhna
7 days ago
PhD position available in evolutionary genomics/bioinformatics (
hoehnalab.github.io/job_adverts/...
). Topic: analyzing gene expression evolution across several firefly species and linking expression changes to genomic architecture. The position is jointly supervised with
@anaevolcatalan.bsky.social
loading . . .
https://hoehnalab.github.io/job_adverts/GEvol2_PhD_Position.pdf
3
34
49
www.scielo.br/j/ni/a/yntXm...
I‘m all for fish descriptions having titles like that. 🐟🧪
loading . . .
An ode to beauty: the discovery of one of the most spectacular tetras (Characiformes: Acestrorhamphidae) - a new species of <i>Inpaichthys</i> from the rio Juruena, Brazil
Abstract Inpaichthys luizae is described from tributaries of the rio dos Peixes basin, a...
https://www.scielo.br/j/ni/a/yntXmkxQj76Rrx8JL7KYGMk/?lang=en
6 days ago
1
4
0
reposted by
Kevin Stevens
So in German, cichlids are called ‚Buntbarsche‘, which literally means ‚colorful perches‘. While they‘re not related to true perches, I guess the ‚colorful‘ part fits quite well. 🐟
#photography
#fishkeeping
14 days ago
0
16
2
reposted by
Kevin Stevens
Check out our new paper led by
@apohle.ecoevo.social.ap.brid.gy
#openaccess
🧪
add a skeleton here at some point
9 days ago
0
5
2
reposted by
Kevin Stevens
Tom Lewin
7 days ago
Lophophorata is monophyletic! Super excited to see this work out in Current Biology - we sequenced a phoronid genome and used shared chromosome fusions to confirm the monophyly of Lophophorata. A big team effort from the Luo Lab
@yjluo.bsky.social
! More here:
authors.elsevier.com/c/1m3mV3QW8S...
2
39
17
reposted by
Kevin Stevens
Paul D. Taylor
8 days ago
#MolluscMonday
Balanced on a wall beneath the ice-cream parlour at Aubeterre (Charente, France) is a fossil of the large rudist bivalve Hippurites, probably collected from a local field underlain by Campanian limestones.
0
15
5
reposted by
Kevin Stevens
David Shiffman, Ph.D. 🦈
8 days ago
Challenging traditional methods of age estimation: elemental and isotopic characterisation of speartooth shark Glyphis glyphis vertebra
www.int-res.com/abstracts/me...
loading . . .
Challenging traditional methods of age estimation: elemental and isotopic characterisation of speartooth shark Glyphis glyphis vertebrae
Chondrichthyan (sharks, rays, and chimaeras) age estimation has mostly been informed through counting bands in calcified hard parts such as vertebrae. However, this method is not broadly...
https://www.int-res.com/abstracts/meps/v771/meps14986
0
10
2
reposted by
Kevin Stevens
The Palaeontological Association
8 days ago
Microstructural & geochemical evidence offers a solution to the cephalopod cameral deposits riddle
onlinelibrary.wiley.com/doi/10.1111/...
@datadryad.bsky.social
0
5
3
reposted by
Kevin Stevens
franz
9 days ago
everyone, go watch this video of a snail giving birth to 3 adorable babies
add a skeleton here at some point
2
39
14
reposted by
Kevin Stevens
Lukas Musher
9 days ago
Our paper on tinamou evolution is finally out in
@systbiol.bsky.social
.
academic.oup.com/sysbio/advan...
1
69
34
reposted by
Kevin Stevens
Prosanta Chakrabarty
11 days ago
I’m stuck in bed between chemo treatments for metastatic coloncancer, wearing a take-home chemo pump attached to my chest. I wanted to share my advice that you can benefit from ‘Letting Your Colleagues In’ don’t need to struggle alone
@insidehighered.com
www.insidehighered.com/opinion/care...
loading . . .
Consider Sharing Health Challenges With Colleagues (opinion)
Being open with my colleagues about my cancer diagnosis has allowed me to access an enormous source of support and comfort.
https://www.insidehighered.com/opinion/career-advice/2025/11/06/consider-sharing-health-challenges-colleagues-opinion
5
82
33
reposted by
Kevin Stevens
Darren Naish
10 days ago
Years of work and collab with an incredible team at
#BBCStudios
#AppleTV
@framestore.bsky.social
... involving so many camera operators, writers, producers, effects people, artists and others,
#PrehistoricPlanetaIceAge
is out on
#AppleTV
Nov 26th. A definitive vision of Ice Age wildlife worldwide.
17
542
180
Load more
feeds!
log in