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clumpusjim.bsky.social

@clumpusjim.bsky.social
404 followers 361 following 105 posts

Fish biologist at Marine and Freshwater Research Institute (Iceland) , wildlife photographer and brewer of beer. Primarily interested in reproductive ecology of fish and all things lumpfish (C. lumpus).

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clumpusjim.bsky.social @clumpusjim.bsky.social · 21/09/2026
Split view on Rstudio is finally here!!!
Screenshot of Rstudio showing the split view on an Rmarkdown document
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clumpusjim.bsky.social @clumpusjim.bsky.social · 11/09/2026
Fascinating footage of the deep sea fish Scalicus engyceros from the South-China Sea which shows it can walk sideways and even backwards, fish that can "walk" are only know to move forwards. The paper can read here doi.org/10.1111/jfb.... #marinelife #fishsci
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International Association for Great Lakes Research @iaglr.bsky.social · 31/08/2026
The stewardship of the Great Lakes depends on cooperation, respect, and a common understanding of shared waters. IAGLR will continue to use the name Lake Ontario across all publications, conferences, and activities, regardless of the recent federal change to the GNIS. bit.ly/4y2OZkP (1/3)
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clumpusjim.bsky.social @clumpusjim.bsky.social · 31/07/2026
Leaf scorpionfish ~Taenianotus triacanthus~ on marine macroalgae known as sea grapes. Bunaken, 🇮🇩 Leaf scorpionfish are camouflaged ambush predators which resemble a leaf. To be more convincing, they gently move their pelvic area to look like a drifting inert object. #marinelife #uwphoto
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clumpusjim.bsky.social @clumpusjim.bsky.social · 30/07/2026
Yellow edged moray eel (Gymnothorax flavimarginatus) in Bunaken, 🇮🇩. Moray eels, one of the few predators of the venomous lionfish. A fascinating video of this can be seen at link.springer.com/article/10.1... #marinelife #uwphoto
Underwater photo of a yellow edged moray eel sticking out its head from a crevice
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clumpusjim.bsky.social @clumpusjim.bsky.social · 29/07/2026
The doubling of something small, i.e. the carbon footprint of eggs, is still small, something that seems to have been lost when writing this article. www.theguardian.com/environment/...
theguardian.com
Organic eggs have worse impact on climate than eggs from caged chickens
Adopting organic free-range model in UK could lead to greenhouse emissions equivalent to 2,316,000 tonnes of CO2, study suggests
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clumpusjim.bsky.social @clumpusjim.bsky.social · 28/07/2026
~Chromodoris annae~ Nudibranch, Anna's magnificent sea slug. C. annae feeds upon one specific genus of sponge, Petrosaspongia, which are toxic to other predators. The nudibranch can absorb and store these compounds, which are unpleasant to potential predators. Bunaken 🇮🇩 #addOcean #uwphoto
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clumpusjim.bsky.social @clumpusjim.bsky.social · 24/07/2026
www.theguardian.com/environment/...
theguardian.com
Orcas seen ramming prey so hard it explodes may be playing game
Scientists believe sunfish-smashing behaviour could be form of entertainment or to help younger whales feed
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Itai Yanai @itaiyanai.bsky.social · 24/06/2026
🔥 Published today, and just in time for summer conferences, here are your guidelines for presenting badly www.nature.com/articles/s41... rdcu.be/fqa92
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clumpusjim.bsky.social @clumpusjim.bsky.social · 25/06/2026
You can also do the same for other sealife using sealifebase sealife <- species_names(server = c("sealifebase"), version = "latest") sealife <- sealife %>% separate(Species, into = c("genus", "species"), sep = " ", remove = FALSE)
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clumpusjim.bsky.social @clumpusjim.bsky.social · 25/06/2026
Any cephalopod experts out there who can id my cuttlefish, either Either Ascarosepion latimanus (broadclub cuttlefish) or Acanthosepion pharaonis (pharaoh cuttlefish). Seem at Bunaken. Indonesia #uwphoto
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clumpusjim.bsky.social @clumpusjim.bsky.social · 24/06/2026
If you are using rmarkdown in Rstudio to write about #fishsci, then you can create a custom dictionary containing all genus and species names for fish with this simple code 1/n
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clumpusjim.bsky.social @clumpusjim.bsky.social · 24/06/2026
Maroon clownfish ~Amphiprion biaculeatus~ with its symbiotic sea anemone the bubble tip anemone ~Entacmaea quadricolor~. Maroon clownfish are the most host specialised of the anemone fish and will associate almost exclusively with this anemone. Taken on the island of Bunaken, Indonesia.
Picture of maroon clownfish in its anemone host Entacmaea quadricolor
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clumpusjim.bsky.social @clumpusjim.bsky.social · 27/05/2026
If you happen to be in northern Iceland tomorrow, drop by the seal center for some presentations from researchers around Iceland, there will even be something about lumpfish. selasetur.is/en/5th-isc-s...
selasetur.is
5th ISC Symposium program - Selasetur Íslands
Find the program for sessions, talks, and networking events at the 5th Icelandic Seal Center Symposium on May 29th, 2026.
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clumpusjim.bsky.social @clumpusjim.bsky.social · 14/04/2026
A superb video from the Lump Now project at DTU Aqua (Denmark) of the moment a lumpfish releases its eggs. www.youtube.com/watch?v=l9z8...
youtube.com
A "Good Step" for Lumpsuckers: Project NOW-LUMP Begins with Successful Egg Production
YouTube video by DTU Aqua Broadcast
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clumpusjim.bsky.social @clumpusjim.bsky.social · 23/03/2026
A nice whiting ()Merlangius merlangus) caught during the Icelandic groundfish survey @mfri.bsky.social . While the range of this species reaches northern Iceland, it is not as common than other areas of Europe, and there is no targeted fishery.
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clumpusjim.bsky.social @clumpusjim.bsky.social · 21/03/2026
Out on the Icelandic groundfish survey and here just a few of the fishes we get at the deeper stations ~400 m. (1/n) Sea tadpole - Careproctus reinhardti Greater eelpout - Lycodes esmarkii Doubleline eelpout - L. eudipleurostictus Arctic eelpout - L. reticulatus Vahl´s eelpout - L. gracilis
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clumpusjim.bsky.social @clumpusjim.bsky.social · 13/02/2026
Today at 12:10 GMT I will provide insight into the wonderful life of a lumpfish.
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clumpusjim.bsky.social @clumpusjim.bsky.social · 12/02/2026
Want to know more about lumpfish (Cyclopterus lumpus), join me online or in person on Friday 13th for my talk at the University of the Westfjords. www.uw.is/en/events/vi...
uw.is
Lunch lecture: Life of the lumpfish: from egg to ocean and back again
At this week’s lunch lecture, we are pleased to welcome James Kennedy, a fish biologist at the Marine and Freshwater Research Institute in Iceland.  Lumpfish is a fish like no other which has been dee...
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clumpusjim.bsky.social @clumpusjim.bsky.social · 08/02/2026
My first ever attempt at #SundayFishSketch. Atlantic mackerel (Scomber scombrus).
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clumpusjim.bsky.social @clumpusjim.bsky.social · 15/01/2026
(1/n) New paper alert. Using GSI based method to investigate maturity in female Greenland halibut Reinhardtius hippoglossoides, a long lived flatfish with an unusual ovary development strategy. @mfri.bsky.social doi.org/10.1111/fme....
Map of sampling locations for Greenland halibut caught during the Greenland annual trawl survey of east Greenland in 2010 and the Icelandic autumn groundfish survey in 2022. Depth information is from NOAA National Centers for Environmental Information (https://doi.org/10.25921/fd45-gt74) using R package marmap (Pante and Simon-Bouhet 2013). Photograph of Greenland halibut by Svanhildur Egilsdóttir.
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Emily Troyer @fishfetisher.bsky.social · 15/01/2026
I got cartoonified!! Check out this awesome video summary of my past PNAS paper on body size evolution in response to paleoclimatic changes in tetraodontiform fishes! www.youtube.com/watch?v=ZC2s... Read the study here: www.pnas.org/doi/abs/10.1...
Cartoon version of me pondering why fishes are so awesome. There are fossil tetraodontiformes and jars of fishes next to me. A tiny pufferfish and a large chunky pufferfish on a scale.Cartoon tetraodontiform fishes. There is a mola mola, pufferfishes, boxfishes, triggerfishes, a filefish, and a cowfish.
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clumpusjim.bsky.social @clumpusjim.bsky.social · 20/11/2025
New publication looking at the occurrence and distribution of polar cod (Boreogadus saida) around Iceland (its southern limit) and how it is affected by changes in temperature. @mfri.bsky.social onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
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clumpusjim.bsky.social @clumpusjim.bsky.social · 28/10/2025
A fascinating talk on fish parasites with Haseeb Randhawa talking with Alessandra Schnider from @icefishresearch.bsky.social . Also available on spotify, just search for "Fiskaspjall". www.youtube.com/watch?v=bhtw...
youtube.com
Haseeb Randhawa: Parasitologist extraordinaire
YouTube video by Fiskaspjall - Where we talk about all things fishy
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clumpusjim.bsky.social @clumpusjim.bsky.social · 07/10/2025
My poster is currently being printed, this is the joy I will endure in the coming days.
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Trevor A. Branch @trevorabranch.bsky.social · 08/09/2025
IT'S ADORABLE! New fish species just dropped: the bumpy snailfish at 10,000 ft down in the ocean gift link: www.nytimes.com/2025/09/08/s...
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clumpusjim.bsky.social @clumpusjim.bsky.social · 01/10/2025
With two above average year classes entering the fishery, ICES advice for Norwegian spring-spawning herring increases by 33 % to 533 914 tonnes. doi.org/10.17895/ice...
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clumpusjim.bsky.social @clumpusjim.bsky.social · 30/09/2025
After years of coastal states failing to agree to a shared TAC for Atlantic mackerel, leading to catches > advice, ICES advice for 2026 is 71 % lower than in 2025. doi.org/10.17895/ice...
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BioProtect Project @bioprotectproject.bsky.social · 25/09/2025
👩‍🔬BioProtect PhD student Marjolijn Rika Nijzingh collected 325 #eDNA samples at 37 sites (0–500m) around 🇮🇸 aboard RV Árni Friðriksson. The data will reveal the presence of fish, mammals, corals & more, a big step for #30x30 goals! Amazing job Marjolijn!👏 #MissionOcean #HorizonEU @mfri.bsky.social
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Rebecca R Helm @rebeccarhelm.bsky.social · 24/09/2025
I get that the news cycle is packed right now, but I just heard from a colleague at the Smithsonian that this is fully a GIANT SQUID BEING EATEN BY A SPERM WHALE and it’s possibly the first ever confirmed video according to a friend at NOAA 10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
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Jan Geert Hiddink @jangeerthiddink.bsky.social · 11/09/2025
PhD opportunity @sosbangor.bsky.social on managing scallop fisheries to find the balance between conservation and fisheries yield. Get in touch if you're interested and I will email you the project description.
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clumpusjim.bsky.social @clumpusjim.bsky.social · 02/09/2025
PhD opportunity to investigate how the invasive pink salmon affects terrestrial communities & ecology. www.jobbnorge.no/en/available...
jobbnorge.no
PhD position in Carrion & Invasive Species Ecology (283012) | Nord University
Job title: PhD position in Carrion & Invasive Species Ecology (283012), Employer: Nord University, Deadline: Sunday, September 21, 2025
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clumpusjim.bsky.social @clumpusjim.bsky.social · 10/07/2025
A whole podcast dedicated to lumpfish!!!
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clumpusjim.bsky.social @clumpusjim.bsky.social · 07/07/2025
Estimated age at which northeast Arctic and North Sea cod mature has decreased over time. This was considered to be a result of fisheries induced evolution whereby fisheries caught older fish, so fish which matured younger were more likely to spawn. 1/n
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clumpusjim.bsky.social @clumpusjim.bsky.social · 04/07/2025
More interesting Greenland shark reproduction tidbits - Male do not mature until they are at least ~2.6 m - Females do not mature until they are at least ~3.9 m - It is estimated that they produce 200–324 pups per pregnancy - new born pups are 35-45 cm journals.plos.org/plosone/arti...
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clumpusjim.bsky.social @clumpusjim.bsky.social · 03/07/2025
1/n Fascinating study collating records of Greenland shark across the Atlantic – males and subadult females found in cold arctic water – adult females reside in warmer Atlantic water – large juveniles are common both in high-Arctic and temperate areas onlinelibrary.wiley.com/doi/10.1002/...
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HulloThere @jethroreading32.bsky.social · 02/07/2025
Every so often I come across a big weird fish I haven't heard of that is so odd and delightful it feels like a gift from the universe to me personally. Anyway I somehow went 25 years without hearing of Gasterochisma, this big bizarro primitive tuna beast. Lovely stuff.
A scientific compound figure showing an adult Gasterochisma specimen. The first image shows the whole animal - it is generally shaped like a tuna, but has a small eye and a big forehead, and has huge scales all over its body. The second and third images are close-ups of the head with anatomical features labelled. Credit: Santos & Nunan 2014An angler posing with a recently caught Gasterochisma specimen aboard a small fishing vessel close to some rocks. The scales are so shiny you can see reflections in them. The fish is quite big, perhaps 150cm long, and apparently weighed 32kg. Credit: Wade Pelham, RedMap.
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clumpusjim.bsky.social @clumpusjim.bsky.social · 02/07/2025
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MFRI - Hafrannsóknastofnun @mfri.bsky.social · 03/06/2025
Lumpfish spawn around the coast of the Nordic countries, with the young migrating away from the coast as they grow. New research shows that temperature is the main driver of lumpfish distribution in the Nordic Seas. More here: www.hafogvatn.is/en/about/new... #lumpfishresearch #marinebiology
hafogvatn.is
Temperature is the main driver of lumpfish distribution
Lumpfish spawn around the coast of the Nordic countries with the young migrating away from the coast as they grow, but where do they go? The new
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Prof Grant Stentiford @cefaschiefsci.bsky.social · 22/01/2025
www.nature.com/articles/s41... Loving this paper on recent collaboration between Cefas and partners, including @universityofexeter.bsky.social ...in essence, tagging of a tuna that got eaten by a whale 🍣
nature.com
High-resolution biologging of an Atlantic bluefin tuna captured and eaten by a supposed orca - Scientific Reports
Scientific Reports - High-resolution biologging of an Atlantic bluefin tuna captured and eaten by a supposed orca
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BioProtect Project @bioprotectproject.bsky.social · 15/05/2025
🏊 Swimmer #RossEdgley is taking on 1,000 miles in 100 days - alongside killer whales 🐋 through 130ft waves 🇮🇸 🌊 🧑‍🔬 This epic #swimforscience is also an innovative #citizenscience mission‼️ 🧬 Ross will collect #eDNA for 🧐 in #BioProtect in 🤝 with @mfri.bsky.social & @matisiceland.bsky.social 🤗 Coming 🔜
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clumpusjim.bsky.social @clumpusjim.bsky.social · 16/05/2025
Ross Edgley will attempt a historic first: 1,610 km swim around the entire coastline of Iceland. Along the way, his support vessel will collect eDNA samples, and conduct microplastic monitoring, and marine mammal identification.
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Michelle Jewell @michellejewell.bsky.social · 15/05/2025
Friends, I am seeking a historian in either Irish or Scottish lore specialized in leviathans, basking sharks, or any other marine creatures.
Basking shark historical sketch.
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Tom Near @tjnear.bsky.social · 14/05/2025
New from the Near Lab, led by @chasedbrownstein.bsky.social "The many origins of extremophile fishes" We explore the phylogenomics and evolutionary history of the lovely and bizarre eelpouts, ronquils, pricklebacks, and wolffishes (Zoarcoidea). royalsocietypublishing.org/doi/10.1098/...
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clumpusjim.bsky.social @clumpusjim.bsky.social · 13/05/2025
When lumpfish are not at the coast spawning (Cyclopterus lumpus), where are they? Turns out, almost everywhere in the Nordic Seas. New paper documenting the summer distribution of lumpfish doi.org/10.1111/fog..... (1/n) @mfri.bsky.social
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MBARI @mbarinews.bsky.social · 06/05/2025
Meet the Manefish, Caristius macropus. Named for their distinctive shape, macropus means large foot. This fish was observed in Monterey Bay 483 meters (1584 feet) deep in August of 2018. #MBARIFromTheVault
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Dr Helen Scales @helenscales.bsky.social · 11/04/2025
I'm mentoring an environmental reporter from Sri Lanka. She's got a prestigious place to study data journalism in the US. Her scholarship only covers 75% of her fees. If you can please consider supporting her. Or get in touch with me if you know any funding sources 💚 www.gofundme.com/f/dimuthu-st...
gofundme.com
Donate to Help Dimuthu’s journey to Columbia Journalism School!, organised by Jeevan Ravindran
100% of contributions go directly towards Dimuthu’s… Jeevan Ravindran needs your support for Help Dimuthu’s journey to Columbia Journalism School!
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clumpusjim.bsky.social @clumpusjim.bsky.social · 28/03/2025
Proud that my article on lumpfish migration made Editor´s choice on Journal of Fish Biology. onlinelibrary.wiley.com/toc/10958649...
onlinelibrary.wiley.com
Journal of Fish Biology: Vol 106, No 3
The <em>Journal of Fish Biology</em> is a leading international ichthyology journal, addressing all aspects of fish biology, their exploitation and importance to human society.
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clumpusjim.bsky.social @clumpusjim.bsky.social · 19/03/2025
A nice catch of Arctic eelpouts, Lycodes reticulatus, north of Iceland.
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clumpusjim.bsky.social @clumpusjim.bsky.social · 18/03/2025
At our most northern stations of the survey we caught a few Lycodes seminudus. The Latin name describes it as semi naked because it has scales only on half its body. The common name in both Icelandic and Danish translates as half-naked eelpout, but in English, the longear eelpout.
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