Have you ever seen a baby gar eating?

This little Spotted Gar is about a week old and has started feeding on zooplankton (in this case brine shrimp/Artemia/ aka "sea monkeys").

Atlantic killifish are robust little fish, but now @tblanchard.bsky.social & co reveal that fluctuating temperatures while the embryos are developing in the egg can have beneficial and damaging consequences

journals.biologists.com/jeb/article/...

climate change is causing larger temperature variations BUT we know very little about how variable temperatures impact sensitive, developing fish

in this new study with @tblanchard.bsky.social & @trishschulte.bsky.social we found surprising impacts during development and after hatch!!

🧪👩🏻‍🔬 🐠 🌎 🌐👇🏼

Thinking about all of my US colleagues today that work for USGS, USFWS, US Parks Service, NOAA and the EPA. From front line environmental practitioners to scientists and policy makers, these folks ensure that waters are swimmable, fish are edible, that natural areas are accessible, etc, etc, etc.

#sturgeonsaturday 🧪👩🏻‍🔬🌎🌐

the last 2 years i’ve been investigating why these giant fish are dying across BC

and i’ve started to identify the stressors that could be driving mortality!!

if you want to learn more, check out this video: tinyurl.com/4m4xxrkh

tldr; it’s getting hot out here yall 🥵

Just in case you were wondering why capital letters are also called "UPPERcase" :)

At @patferreira.bsky.social's request, a box to incubate slides during immunostaining.

Might be useful to other folks out there :)

I wanted to get a video of this ghost crab but every time I got close to their hole they scuttled back in, so I tried getting clever with it. I made a little sandcastle and shoved my phone into it, hit record, and walked away. Crab was VERY suspicious of this addition to their environment.

Another little creb 😊

10 months ago I was working on the previous version of this controller 😄

I am again improving my respirometry controllers in prep for an experiment 🐟

Today, I learned how to use one arduino to control any number of others!

This is a huge upgrade because now I can control _any number_ of flush pumps while using only 1 USB port on the computer.

My latest cartoon for @newscientist.com

p.s. this week I am on a USA/Canada tour with my new book. Details and preorder links at tomgauld.com

Earlier this year, @andyturko.bsky.social taught me how to use a 3D-printer. It's the most useful skill ever for experimental biologists!

Today, I decided to create a printables account to share my models with the world :) Only one simple model there for now, but more to come!

Good time to plug this other recent paper on tagging and small fish:

At work, we often anaesthetise, perform surgery on, and tag juvenile fish. We wanted to find out if these procedures impact their oxygen consumption in the following days. Good news, we didn't find cause for concern! 🙂

Open access here: onlinelibrary.wiley.com/doi/10.1111/...

JUST IN:
A historic conviction: Brazil's Supreme Court delivers a majority vote to convict former President Jair Bolsonaro over a plot to overthrow the government.

This week we drove 4000km to collect giant floaters and tiny lake sturgeon and bring them back to Halifax. What a journey it was! Our new guests are now happy in their new homes 😊

This week we drove 4000km to collect giant floaters and tiny lake sturgeon and bring them back to Halifax. What a journey it was! Our new guests are now happy in their new homes 😊

Essay: I’m aware of how vulnerable I am on my bike when I place my left foot on the pavement, waiting for the light to change, surrounded by cars next to me ready to roar, writes Mathilde Piton. At the same time, there’s a feeling of power. I’m in charge.

‘Seek Funding’ Step Added To Scientific Method

Holy shit, they did it. They wrote the headline.

New research tracking the first-year survival rates for lake sturgeon released to a #GreatLakes tributary, the Maumee River, in 2018, 2019 + 2021 suggests that efforts are on track to achieve naturally-reproducing lake sturgeon in the river (hopefully) by 2038 news.utoledo.edu/index.php/07...

Congratulations to Patricia Ferreira, the winner of this year's JEB sponsored YSAS award at the 2025 #SEBconference for their talk titled 'Will you miss me when I am gone? Gastric proton pump knockout and the importance of gastric acid in digestion, metabolism & growth in fish'

#seb2025
Here we go!