Kathryn Peiman @kpeiman1
Nature, science, photos, videos, art. youtube.com/c/NatureTidbits Joined September 2015-
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Endangered👏species👏are👏not👏red👏tape👏 Let's stop Bill 5 and the dangerous narrative that the Endangered Species Act is excessive bureaucracy instead of necessary protection for our most vulnerable species. Share and sign our petition to stop Bill5: ontarionature.good.do/bill-5-stop-at…
Interested in what the changes to Ontario's Endangered Species Act mean? Read my story here: thenarwhal.ca/ontario-endang…
The Rough Fish Revolution “Fisheries scientists are only now coming to understand the important roles native “rough fish” play in freshwater ecosystems across North America—even as these long-maligned species are increasingly at risk. @bioGraphic biographic.com/the-rough-fish…
Brook trout spawn. Just a *few* males participating!
Interested in a coffee-table style salmon and trout book for xmas? Order by nov 22 to ensure it gets to you in time! nature-tidbits.square.site/product/ebb-an… #nature
My op-ed piece about the new fishing sanctuary on the Ganaraska River. thenarwhal.ca/opinion-port-h…
The Doug Ford government introduced a bill this week aimed at hitting the gas on Highway 413 — and putting the brakes on bike lanes. Here’s what it means for the environment. Via @EmmaMci thenarwhal.ca/ontario-highwa…
We are seeking #GreyLiterature for an ongoing @FishOceansCAN evidence synthesis on the impacts of #sealice from salmon farms on wild #PacificSalmon. Please get in touch if you have any literature or data related to the topic! #netpens #aquaculture
“Bikes may be an easy strawman, but blaming them without evidence just inflames tensions on the road — and distracts us from finding real solutions,” writes @EmmaMci about Doug Ford’s move to limit bike lanes (and also build a tunnel under Highway 401). thenarwhal.ca/doug-ford-limi…
Blacknose dace leaping at the base of a dam - throughout the day and continuously, yet the following day there were none. Interesting!
New 📰 A harm reduction approach to improving peer review by acknowledging its imperfections 👥 Read the paper ➡️ tinyurl.com/54bbfvuu 📷 from facets-2024-0102
My story in The Narwhal about DFO's recovery strategy for this fish - and why it won't work.
My story in The Narwhal about DFO's recovery strategy for this fish - and why it won't work.
A fun picture i just took of a cormorant eating a sea lamprey (yes, the lamprey was alive and yes, the cormorant did eat it).
'Protecting' wild fish AFTER the largest run ever? So that this easy to monitor river is closed, but all the small runs (also wild but no protection) now will have increased pressure? And opening up the repeat-spawing wild steelhead to increased angling? Makes no sense.
'Protecting' wild fish AFTER the largest run ever? So that this easy to monitor river is closed, but all the small runs (also wild but no protection) now will have increased pressure? And opening up the repeat-spawing wild steelhead to increased angling? Makes no sense.
Thrilled to be in the top 16 photos submitted to Canadian Geographic for their 2024 Wildlife Photography of the Year competition! Thanks to the little jumping spider for posing. See all the winners at cangeo.ca
A male largemouth bass guards his 1000s of offspring. #nature is neat.
Check out the summer issue of @OntarioNature magazine just released! Thanks for selecting my salamander larvae picture for the featured photographer piece.

Dr. Solomon David @SolomonRDavid
33K Followers 6K Following Fish Scientist & Prof, aka “The Gar Guy” | 🌎Freshwater Conservation | SciComm • @TheGarLab | Views mine | he/him | #GarWeek Wherever you go, there you gar
CalebHasler @CalebHasler
2K Followers 3K Following Leader of the Fish Biology and Aquatic Conservation Lab @uwinnipeg. @CARSAFS Past President.
Chris Conroy @chris_fish_bio
2K Followers 311 Following Husband, dad, fish biologist and amateur wildlife photographer 🙂 All opinions my own.
Emily Lechner MSc @EmilyRLechner
525 Followers 333 Following PhD student at @goteborgsuni | MSc in brook trout ecophysiology @TrentUniversity | BScH marine & freshwater biology @uofg | history in SAR @onresources
All Too Clear Film @AllTooClearFilm
694 Followers 239 Following "All Too Clear" is a documentary film on the impacts of invasive mussels on the Great Lakes that uses underwater drones to explore beneath the surface
Tristan A F Long 🪰... @thelonglab
3K Followers 5K Following Associate Professor @Laurier @LaurierBiology Evolutionary Genetics & Behavioural Ecology #DrosLife #ScienceDoughnuts #JournalKlatch ORCID: 0000-0002-8708-2728
Ms. Sugarcrush @sugarcrush12345
499 Followers 3K Following A Project Planning student (SIG) & Science. I'm an avid fisherman, animal lover & have a deep interest in Volcanoes, Oceans, ⛳🏌️♀️🎣 👣🐳🐧🦖🪺🏞️🌅🌋❄️🌿🌻
Adventurous Sophia⚔ @USA__Aa_USA
366 Followers 563 Following Hunting has not only given me a taste of what nature has to offer, but it has also allowed me to build perseverance and endurance in my pursuits and challenges.
Terrace Bay in NWO (U... @RS77980716
48 Followers 431 Following A great place to visit, live and thrive. 🌲🎣🏕️🇨🇦
Mem Fox @FoxMem90997
649 Followers 1K Following Author | Bestselling Writer of Children’s Books 📚 | Advocate for Early Literacy | Inspiring Lifelong Readers Through Storytelling
Crager44 @crager44
34 Followers 550 Following
Samer Marzouk @samer_marzok
324 Followers 3K Following Fish production engineer, Fisheries Authority/Master/PhD researcher with experience in growing marine algae and hatching shellfish
Allen Curry (@racthew... @RAllenCurry
876 Followers 757 Following Allen is a Science Director at the Canadian Rivers Institute, and Professor of Biology, Forestry and Environmental Management at UNB F. He leads the MAES.
Elaine Anselmi @elaineanselmi
1K Followers 2K Following Ontario bureau chief @thenarwhalca . Probably outside @elaineanselmi.bsky.social
David Lawrie @Redside_Dave
150 Followers 424 Following
Citizen Scientists @TOCitizenSci
851 Followers 1K Following A volunteer, not-for-profit group that focuses on ecological monitoring, environmental training and education in the Rouge River watershed, Toronto.
Darren Elias @darrenwelias
852 Followers 3K Following Director @kga_pr. ex-DComms @OntarioGreens. Mostly tweet about green city-building, urbanism, policy & rugby. Big fan of cool cities. YIMBY. (tweets mine)
Darwin BondGraham @DarwinBondGraha
16K Followers 5K Following News Editor @Oaklandside. DMs off-record. Author “The Riders Come Out at Night” w/ @awinston. More thoughtful conversations: https://t.co/fWY3sj87T9
Jim Moczynski @JMoczynski6969
773 Followers 2K Following Fishing, hunting, workout fanatic, foodie, golden retriever lover, golfer, journeyman meat cutter, journeyman carpenter, construction operations manager
flag jaw wobbly @stakenut
575 Followers 1K Following more densely stupid than it is easy for anyone in the twentieth century to conceive
Jenna Lawrence @daubentonia
259 Followers 3K Following It's okay, I have a Ph.D. in monkeys. (she/her)
Dan Murphy @MurphDogMillion
266 Followers 3K Following
Garfield Lovers Faceb... @GarfiedLoversFB
53 Followers 478 Following this profile runs Blue Blocker :)
Mithun @SHAKILVL
283 Followers 7K Following
Muhammad Badrul Alam ... @badrul_shaheen
377 Followers 6K Following Stock Assessment, Marine Fisheries Management and Policy Practitioner. Interested in Marine Ecology, Population Genetics, Molecular Taxonomy and Genomics.Parity of Parroty Par... @MerlinFAC
223 Followers 1K Following Christian, Aerospace, Nature, & General Weirdness Enthusiast // Love even the neighbors you disagree with // God ❤ you! // Romans 6:23 // 🇺🇦 WILL WIN!
IRFAN AHMAD.in @ahmerirfan
91 Followers 2K Following Working as Professor (Genetics & Biotec),Faculty of Fisheries SKUAST-Kashmir
Brad Howell @bradhowelll
476 Followers 438 Following PhD candidate studying predator-prey interactions in warm water fishes @TrentUniversity. Student Rep for @CARSAFS and reckless canoeist.
caio moretti @moretticaio
110 Followers 860 Following
Derek M 🇺🇸🏴�... @RyanSturgeon10
2K Followers 2K Following hunting fishing and great outdoors. husband, father, veteran and special needs advocate.Klaus Stiefel @Pacificklaus
2K Followers 3K Following Biologist, Underwater Photographer, Diving Instructor, Writer, based in the Philippines. YT: https://t.co/8HAWBqPRiE…
Paul @pjost10
6K Followers 3K Following Fishing Enjoyer. Creation Respecter. Married. No Hoes. GenX. Christ is King.
Ben Altman @BaltmanBen
13 Followers 114 Following
union (grief era) @yumtapwater
621 Followers 1K Following he/him midwestern ace cats, unions, enjoying tapwater, fishin Minneapolis - St Paul
Maxwell Shafer @maxwellshafer
807 Followers 1K Following Assistant Professor @UofTCellSysBiol - comparative genomics/ethology & evolutionary cell biology of sleep + adventures with @hilsawh
Seraphim (Sarah) Baba... @salmo_salarent
96 Followers 451 Following PhD student @ROMtoronto @eebtoronto | fish, fisheries, genetics, congen, popgen, and ancient DNA 🐟🧬
Zoological Research @ZR_ZRDC
191 Followers 932 Following Zoological Research (ZR, since 1980), publishes Primates and Animal Models, Conservation and Utilization of Animal Resources, and Animal Diversity and Evolution
Conservation Works (f... @NCRCANDDC
136 Followers 452 Following We cultivate commerce through sustainable use of agricultural and natural resources.
Taya de Blonk @evolutionoftaya
44 Followers 171 Following PhD student @ NCSU studying the evolution of fish species
Carmine Alfano @alfanocg
103 Followers 702 Following outdoorsman, conservationist, cartophile, ai googler building https://t.co/OOc2Qk2QoY occasional opinions are my own
David Chong @FishHardDave
3K Followers 710 Following FISH HARD! DREAM BIG! words that I live by! I love fishing especially the catching part but am totally addicted to competitive fishing!
Ontario Nature @OntarioNature
30K Followers 1K Following Ontario Nature has been protecting wild species and wild spaces through conservation, education and public engagement since 1931.
AFS-OC @afs_ontario
653 Followers 531 Following The American Fisheries Society Ontario Chapter. Sharing info on #fish, #fisheries, #science, and #conservation.
Marieka Chaplin 🇨�... @SandowFarm
482 Followers 1K Following Organic apple orchardist. Appleseed Cabin. Loves biology and nature conservation. Passionate about local agriculture. Executive Director.
Syseslay @syseslay16385
37 Followers 1K Following
Bill Manci @FTAFishNews
1K Followers 3K Following Fisheries Technology Associates is a team of #aquaculture, #fishfarming, #aquaponics, #IMTA, and wild #fisheries #consultants serving clients worldwide.
Dr. Solomon David @SolomonRDavid
33K Followers 6K Following Fish Scientist & Prof, aka “The Gar Guy” | 🌎Freshwater Conservation | SciComm • @TheGarLab | Views mine | he/him | #GarWeek Wherever you go, there you gar
Katie O'Reilly @DrKatfish
16K Followers 4K Following Aquatic Invasive Species @ILINSeaGrant & @INHSillinois | PhD @NotreDame | #GreatLakes | Come for the #ecology & #scicomm, get reeled in by the fish puns
CalebHasler @CalebHasler
2K Followers 3K Following Leader of the Fish Biology and Aquatic Conservation Lab @uwinnipeg. @CARSAFS Past President.
Oklahoma Department o... @OKWildlifeDept
240K Followers 919 Following We manage/protect fish & wildlife, along with their habitats, while also growing a community of hunters & anglers, partnering with those who love the outdoors
Dr. David Shiffman �... @WhySharksMatter
73K Followers 1 Following Research associate at @ASU @ASUinDC studying sharks and their conservation, science officer @scbmarine, author and consultant
Academic Chatter™ @AcademicChatter
253K Followers 883 Following Join #AcademicChatter for support & community.
Jack Perks @JackPerksPhoto
11K Followers 931 Following Fish Twitcher, Wildlife Cameraman, Author & Podcaster (@TitBearded) Amateur Gardener
Ontario Fish and Wild... @FishWildlifeON
10K Followers 264 Following Official account of the Fish & Wildlife Program of the Ministry of Natural Resources. Terms of use https://t.co/s5vQ5OgwYf En français @PecheFauneON
All Too Clear Film @AllTooClearFilm
694 Followers 239 Following "All Too Clear" is a documentary film on the impacts of invasive mussels on the Great Lakes that uses underwater drones to explore beneath the surface
Conservation Café @TrentConserve
324 Followers 202 Following Trent University's Conservation Café discussion series. Second Tuesday of the month at The Publican House.
Ontario Ministry of N... @ONresources
32K Followers 536 Following The official account of the Ministry of Natural Resources. Terms of use https://t.co/DXb6q1Rw1t. En français: @ONressources
GLIER at UWindsor @GLIERUWINDSOR
2K Followers 967 Following Official X account for The Great Lakes Institute for Environmental Research (GLIER) at The University of Windsor, Ontario Canada.
The Daily Show @TheDailyShow
8.9M Followers 1K Following Jon Stewart and The Best F**king News Team. Weeknights 11/10c on @ComedyCentral. Next day on @paramountplus. New episodes September 8th!
Allen Curry (@racthew... @RAllenCurry
876 Followers 757 Following Allen is a Science Director at the Canadian Rivers Institute, and Professor of Biology, Forestry and Environmental Management at UNB F. He leads the MAES.
Indigenous Affairs an... @IndigenousON
18K Followers 754 Following Official account of the Ministry of Indigenous Affairs and First Nations Economic Reconciliation. Terms of use: https://t.co/RT2Q1iYthL. FR: @AutochtonesON
Elaine Anselmi @elaineanselmi
1K Followers 2K Following Ontario bureau chief @thenarwhalca . Probably outside @elaineanselmi.bsky.social
Citizen Scientists @TOCitizenSci
851 Followers 1K Following A volunteer, not-for-profit group that focuses on ecological monitoring, environmental training and education in the Rouge River watershed, Toronto.
David Lawrie @Redside_Dave
150 Followers 424 Following
Canadian Science Publ... @cdnsciencepub
8K Followers 2K Following Independent, not-for-profit publisher | Researcher-led | Committed to advancing excellence in scientific journal publishing | #YourResearchHome 🔬📄
Wildlife Photographer... @NHM_WPY
56K Followers 2K Following The longest-running and most prestigious nature photography competition and exhibition, run by @NHM_London. Explore our online gallery:
Marieka Chaplin 🇨�... @SandowFarm
482 Followers 1K Following Organic apple orchardist. Appleseed Cabin. Loves biology and nature conservation. Passionate about local agriculture. Executive Director.
ScicommHive @ScicommHive
2K Followers 2K Following We are curating international #scicomm opportunities to ultimately help connecting audiences altogether
ESA Communication and... @ESA_SciComm
773 Followers 364 Following Empowering ecologists to do, study & get credit for best practices in #scicomm & #sciengage efforts | #ESASciComm #EngageESA #DiversifySTEM | @ESA_org section
Ontario Biodiversity ... @OnBioCouncil
2K Followers 807 Following The Ontario Biodiversity Council guides the implementation of Ontario's Biodiversity Strategy, and promotes the appreciation and conservation of biodiversity.
Teach Me About the Gr... @TeachGreatLakes
553 Followers 38 Following A podcast in which smart people teach @jscarlton about Great Lakes science, culture, and sandwiches. Or donuts. Co-hosted by the awesome staff at @ilinseagrant.
Freshwater Science @BenthosNews
9K Followers 2K Following The Society for Freshwater Science (SFS) is an international scientific society whose purpose is to promote understanding of freshwater ecosystems 💦 #2025SFS
Canada Water Agency @WaterAgencyCAN
4K Followers 1K Following Protecting Canada's freshwater. | Terms: https://t.co/wuzi7GhpnY | En français : @AgenceEauCAN
IJC - International J... @IJCsharedwaters
21K Followers 3K Following More than a century of cooperation protecting #SharedWaters in Canada & US. Official account of International Joint Commission. Likes, RTs ≠ endorsement
Mark Mattson @waterkeepermark
13K Followers 14K Following Lawyer, President Swim Drink Fish @swimdrinkfish. Former Lake Ontario Waterkeeper @LOWaterkeeper.
CSEE_SCEE @CSEE_SCEE
4K Followers 707 Following Canadian Society for Ecology & Evolution | Société canadienne d'écologie et d'évolution. Tweets by Graduate Student & Postdoctoral Councilors
WCS Canada @WCS_Canada
6K Followers 2K Following Wildlife Conservation Society Canada 🇨🇦 Dedicated conservation scientists in action to bring about a world where wildlife thrives 🌎 #WeStandForWildlife
Centre For Ecosystem ... @CentreEcoMgmt
236 Followers 205 Following 🦋 @centreecomgmt.bsky.social 🦋 Centre For Ecosystem Management at the @UofG. Advancing knowledge and management of the #GreatLakes ecosystems and beyond.
Georgie Hoffman @ghoffm27
215 Followers 399 Following B.S. Aquatic and Fisheries Science from @sunyesf ‘22 • Fisheries bio tech working on Lake Ontario • #teamfish 🐟
Earth Rangers/Éco H�... @EarthRangers
11K Followers 2K Following Earth Rangers is the kids' conservation organization! We've inspired 300k+ members to learn about the environment & help protect animals! #Project2050
Joseph Bennett @Joe_Ecology
2K Followers 2K Following Associate Professor at Carleton University. he/him. Basically inactive here until ownership changes. Please find me on Linkedin for now.
Toronto and Region Co... @TRCA_HQ
11K Followers 169 Following Official Twitter account of Toronto and Region Conservation Authority (TRCA)
Ontario Weather Birdi... @ONweatherbirder
412 Followers 49 Following Birding…weather… how it all fits together and effects what we see! mainly just random thoughts : ) follow me on BlueSky! @onweatherbirding leaving Twitter soon
Jess Batson @JessBatson
161 Followers 194 Following (she/her) Biologist in Environmental Consulting with special interest in Fisheries and Restoration Ecology (HBSc Trent University and Fleming College)
HU Department of Aqua... @hu_biology
220 Followers 208 Following Department of Aquaculture and Fish Biology of Hólar University. We study Aquaculture, Fish Biology, Limnology #holaraquatic
Colin Bean @ProfColinBean
3K Followers 1K Following Conservation biologist who, like a dead fish, just goes with the flow. All views expressed are my own and RTs ≠ endorsements. Leantóir CelticFC 🍀
Ron Kichurchak Jr �... @RonKichurchak
6K Followers 6K Following Wetland ecologist/conservation biologist @NYSDEC. Fascinated with herps, inverts, and every other creature. MSc Wildlife Biology Clemson graduate. Views my own.
J. Näslund @joacim_naslund
837 Followers 655 Following Not very active on Twitter anymore. This place sucks ass nowadays. Keeping my account until I find time to export data. Find me at: https://t.co/CVVQlR7PEk
Maren Wellenreuther @MarenWellenreut
889 Followers 256 Following Based in New Zealand. Research: #seafood #genomics #adaptation. Editor-In-Chief for @EvolAppJournal. Prof at @AucklandUni. Science Group Leader @plantandfood
Fadly Y. Tantu @TantuFadly
197 Followers 913 Following Ichthyologist and Herpetologist, Fish Ecobiologist Aquatic Ecologist Limnologist, and Conservation Biota Aquatic Endemic
Mike Akresh, Ph.D. @MikeAkresh
122 Followers 198 Following Wildlife Biologist and Applied Ecologist. Core Faculty at Antioch University New England. Research Affiliate at UMass Amherst.
BBC Earth @BBCEarth
825K Followers 807 Following A window to our world 🌎 This is a commercial channel from BBC Studios.
The Freshwater Blog @freshwaterblog
6K Followers 4K Following Helping bring Europe's freshwaters back to life. Supported by @euMERLINproject + @unidue. Feedback, news and contributions: [email protected]
Vivian M Nguyen @vivmn
1K Followers 763 Following Asst. Prof @CarletonIEIS; fish, conservation social science, #scicomm, #scipol, socio-ecological systems, knowledge mobilization, Aussie Football & new mama
Wild Salmon Center @wildsalmoncntr
4K Followers 864 Following We protect salmon & steelhead ecosystems of the Pacific Rim.
WorkCabin Canada 🇨... @WorkCabinCA
2K Followers 308 Following Canada's favourite job board for the conservation field, since 2007. Follow our founder too @WorkCabin
The Narwhal @thenarwhalca
37K Followers 1K Following We tell stories about the natural world in Canada you can’t find anywhere else. Sign up: https://t.co/TlQv6DP9js Become a member: https://t.co/jXsMqA55tb
Global Center for Spe... @ProtectSpecies
2K Followers 1K Following We support and connect thousands of conservation experts working to secure a future for fauna, flora, and funga. @IndianapolisZoo & @IUCNSSC partnership.
BBC Wildlife @WildlifeMag
224K Followers 21K Following BBC Wildlife Magazine - bringing you closer to nature with advice, news, the best nature writing and stunning wildlife photography
Julie Claussen @julielovesfish
2K Followers 4K Following She/Her. Fisheries biologist, Director of Operations @fishconserve. What makes me happy? SciComm • Celebrating diversity • Positive attitudes • Coffee • Rivers
Green Jobs Board @greenjobs_board
371 Followers 2 Following Community, empowerment and you equals the future of green jobs
Environmental Jobs: G... @CanadaGreenJobs
8K Followers 5K Following #Meaningfulwork in #environment #sustainability #conservation #nature #greenjobs #climateaction ...