My Daughter’s First Pet—the Next Big Model Organism?
My Daughter’s First Pet—the Next Big Model Organism?
Bettas were likely the first fish welcomed into human homes. Now, scientists are welcoming them into the lab to learn how genes dictate their appearance and behavior.
My Daughter’s First Pet—the Next Big Model Organism?
My Daughter’s First Pet—the Next Big Model Organism?

Bettas were likely the first fish welcomed into human homes. Now, scientists are welcoming them into the lab to learn how genes dictate their appearance and behavior.

Bettas were likely the first fish welcomed into human homes. Now, scientists are welcoming them into the lab to learn how genes dictate their appearance and behavior.

fish behavior
Trout Appear to Get Hooked on Meth
Trout Appear to Get Hooked on Meth
Christie Wilcox | Jul 6, 2021
After eight weeks of exposure to ecologically plausible levels of methamphetamines, the fish tended to prefer meth-laced water over water without the drug.
Study Refutes Findings that Acidification Affects Fish Behavior
Study Refutes Findings that Acidification Affects Fish Behavior
Emma Yasinski | Jan 8, 2020
The new experiments use standardized methods and video recordings, but some researchers stand by earlier evidence that ocean pH influences coral reef fish’s response to predator cues.
Fish Biologist Victoria Braithwaite Dies
Fish Biologist Victoria Braithwaite Dies
Catherine Offord | Oct 30, 2019
The Penn State University scientist was known for her work on fish’s perception of pain.
Image of the Day: Flashlight Fish
Image of the Day: Flashlight Fish
Nicoletta Lanese | Aug 21, 2019
The bioluminescent Anomalops katoptron can coordinate its schooling behavior after dark. 
Image of the Day: Fossilized Motion
Image of the Day: Fossilized Motion
Chia-Yi Hou | May 29, 2019
A fossil of a school of fish from the Eocene appears to represent coordinated collective movement.
Image of the Day: Belly Flop
Image of the Day: Belly Flop
Chia-Yi Hou | May 23, 2019
Watch a Munk’s devil ray breach.
The Mirror Test Peers Into the Workings of Animal Minds
The Mirror Test Peers Into the Workings of Animal Minds
Carolyn Wilke | Feb 21, 2019
Nearly 50 years after its development, only a handful of creatures have passed the self-awareness exam. A new attempt with fish highlights a debate over the test’s use and meaning.
<em>The Scientist</em>&rsquo;s Most Stunning Infographics of 2018
The Scientist’s Most Stunning Infographics of 2018
Jef Akst | Dec 21, 2018
From cellular self-digestion to the effects of exercise on the brain, our features editor picks her favorite art custom-made for the magazine.
Satiated Fish Swim at the Back of the Pack
Satiated Fish Swim at the Back of the Pack
Ashley Yeager | Jul 1, 2018
Digesting a big meal takes energy, forcing some minnows to swim in spots at the rear of a school.
Infographic: Swimming After Eating
Infographic: Swimming After Eating
Ashley Yeager | Jun 30, 2018
How a meal affects minnows' positions in their schools
Image of the Day: Performance Anxiety
Image of the Day: Performance Anxiety
Sukanya Charuchandra | Jun 21, 2018
In the presence of competition, archerfish become more hesitant but accurate shooters.
Plastic Pollutants Can Harm Fish
Plastic Pollutants Can Harm Fish
Tracy Vence | Jun 6, 2016
European perch larvae exposed to environmentally relevant concentrations of polystyrene particles preferred to eat the microplastics in place of prey, according to a study.
Musical Scales
Musical Scales
Kerry Grens | Sep 1, 2015
The quest to document an ancient sea creature reveals a cyclical chorus of fish songs.
A Fishy Chorus
A Fishy Chorus
The Scientist Staff | Aug 31, 2015
Watch the coelacanth documentary that fish biologist Eric Parmentier and filmmaker Laurent Ballesta were making when they discovered and recorded a world of undersea sound.