@clumpusjim.bsky.social
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).
Primarily interested in reproductive ecology of fish and all things lumpfish (C. lumpus).
Today at 12:10 GMT I will provide insight into the wonderful life of a lumpfish.
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...
www.uw.is/en/events/vi...
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...
www.uw.is
February 13, 2026 at 7:46 AM
Today at 12:10 GMT I will provide insight into the wonderful life of a lumpfish.
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...
www.uw.is/en/events/vi...
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...
www.uw.is
February 12, 2026 at 10:49 AM
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...
www.uw.is/en/events/vi...
My first ever attempt at #SundayFishSketch. Atlantic mackerel (Scomber scombrus).
February 8, 2026 at 11:56 AM
My first ever attempt at #SundayFishSketch. Atlantic mackerel (Scomber scombrus).
(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....
doi.org/10.1111/fme....
January 15, 2026 at 7:42 AM
(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....
doi.org/10.1111/fme....
Reposted
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...
www.youtube.com/watch?v=ZC2s...
Read the study here: www.pnas.org/doi/abs/10.1...
January 15, 2026 at 3:01 AM
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...
www.youtube.com/watch?v=ZC2s...
Read the study here: www.pnas.org/doi/abs/10.1...
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/doi/10.1111/...
onlinelibrary.wiley.com
November 20, 2025 at 11:14 AM
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/doi/10.1111/...
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...
www.youtube.com/watch?v=bhtw...
Haseeb Randhawa: Parasitologist extraordinaire
YouTube video by Fiskaspjall - Where we talk about all things fishy
www.youtube.com
October 28, 2025 at 10:11 AM
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...
www.youtube.com/watch?v=bhtw...
My poster is currently being printed, this is the joy I will endure in the coming days.
Ugh, and the do I/don't I talk to the person looking at my poster? Are they genuinely interested to just being polite? Do they want a minute to read it over? Or should I jump in and give them a pitch?
October 7, 2025 at 9:05 AM
My poster is currently being printed, this is the joy I will endure in the coming days.
Reposted
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...
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...
September 8, 2025 at 7:22 PM
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...
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...
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...
October 1, 2025 at 10:52 AM
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...
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...
September 30, 2025 at 11:36 AM
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...
Reposted
👩🔬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
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
September 25, 2025 at 7:00 AM
👩🔬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
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
Reposted
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 🧵)
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
September 24, 2025 at 8:30 PM
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 🧵)
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
Reposted
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.
September 11, 2025 at 12:56 PM
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.
PhD opportunity to investigate how the invasive pink salmon affects terrestrial communities & ecology.
www.jobbnorge.no/en/available...
www.jobbnorge.no/en/available...
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
www.jobbnorge.no
September 2, 2025 at 11:37 AM
PhD opportunity to investigate how the invasive pink salmon affects terrestrial communities & ecology.
www.jobbnorge.no/en/available...
www.jobbnorge.no/en/available...
A whole podcast dedicated to lumpfish!!!
They’re round, suction-cupped, and as it turns out, full of secrets. #Lumpfish may not be glamorous, but these quirky creatures are doing serious work in the Gulf of Maine.
Tune-in to episode 2 of #TimeAndTide to learn about the secret lives of lumpfish: seagrant.unh.edu/blog/2025/06...
#MarineLife
Tune-in to episode 2 of #TimeAndTide to learn about the secret lives of lumpfish: seagrant.unh.edu/blog/2025/06...
#MarineLife
July 10, 2025 at 11:39 AM
A whole podcast dedicated to lumpfish!!!
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
July 7, 2025 at 3:05 PM
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
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...
- 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...
July 4, 2025 at 10:12 AM
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...
- 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...
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/...
– 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/...
July 3, 2025 at 11:17 AM
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/...
– 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/...
Reposted
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.
July 2, 2025 at 2:47 PM
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.
🎣 New paper! Combining dive surveys and beach seining reveals contrasting nursery use: 0-group saithe dominate shallow algal zones early in summer, while cod settle later and use broader depths.
📄 doi.org/10.1002/ece3...
📄 doi.org/10.1002/ece3...
Complementing Beach Seining With Dive Surveys Improves Fine‐Scale Resolution of 0‐Group Gadoid Distributions in Nearshore Habitats
Located within the Westfjords of Iceland, the fine-scale depth distribution of juvenile 0-group gadoids was surveyed in nearshore nursery habitats using beach seine and dive survey methods. The beach....
doi.org
July 2, 2025 at 8:28 AM
Reposted
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
More here: www.hafogvatn.is/en/about/new... #lumpfishresearch #marinebiology
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
www.hafogvatn.is
June 3, 2025 at 1:22 PM
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
More here: www.hafogvatn.is/en/about/new... #lumpfishresearch #marinebiology
Reposted
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 🍣
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 🍣
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
www.nature.com
January 22, 2025 at 11:50 AM
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 🍣
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 🍣
Reposted
🏊 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 🔜
🧑🔬 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 🔜
May 15, 2025 at 1:16 PM
🏊 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 🔜
🧑🔬 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 🔜
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.
If you want to know more about the opportunity that Ross Edgley gave us during his swim contest around Iceland, here is the post from the BioProtect EU mission project:
bioprotect-project.eu/the-great-sc...
bioprotect-project.eu/the-great-sc...
The Great Scientific Swim around Iceland: 1,000 miles in 100 days! - BioProtect
bioprotect-project.eu
May 16, 2025 at 9:44 AM
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.