Giant manta ray swimming
Science Snapshot: Giant Manta Ray Sanctuary
Tourist photos help identify endangered manta rays and highlight the efficacy of recovery efforts at Komodo National Park.
ABOVE: Nick Longfellow
Science Snapshot: Giant Manta Ray Sanctuary
Science Snapshot: Giant Manta Ray Sanctuary

Tourist photos help identify endangered manta rays and highlight the efficacy of recovery efforts at Komodo National Park.

Tourist photos help identify endangered manta rays and highlight the efficacy of recovery efforts at Komodo National Park.

ABOVE: Nick Longfellow

fish

Photo of fish in the Haemulidae family
Fish Are Chattier Than Previously Thought
Connor Lynch | May 2, 2022
Once thought to be silent, fish turn out to produce a range of vocalizations—so polluting the oceans with noise could pose a danger to them.
A tubifer cardinalfish
Genome Spotlight: Tubifer cardinalfish (Siphamia tubifer)
Christie Wilcox | Apr 28, 2022
These tiny reef fish harbor luminous bacteria, and the chromosome-level assembly of the species’ genome may facilitate the duo’s use as a vertebrate model for symbiosis.
illustration of yellow fish with red stripe down its back
Can These Fish Do Math?
Sophie Fessl | Mar 31, 2022
Scientists find that two species can be trained to distinguish quantities that vary by one.
An artistic rendering of a dinosaur fleeing a wall of water
Cretaceous Meteor That Killed Most Life on Earth Hit in Spring
Amanda Heidt | Feb 24, 2022
Researchers determined the season during which the meteor struck by studying the bones of fish excavated from a contentious field site.
goldfish in tank
Researchers Train Goldfish to “Drive”
Chloe Tenn | Jan 12, 2022
The Scientist spoke with cognitive neuroscientist Ronen Segev about how he taught goldfish to maneuver a moveable tank over land toward a visual target.
school of fish
Making Waves and Avoiding Beaks
Chloe Tenn | Dec 23, 2021
Moving collectively on the water surface could help protect schools of fish from being eaten by predatory birds.
The man-of-war fish (Nomeus gronovii), a species of medusafish, near the tentacles of a siphonophore.
Medusafishes Are Grouped by Shared, Odd Traits: Study
Devin A. Reese | Dec 1, 2021
Shared features, such as thick, slimy skin and a throat filled with teeth, suggest that medusafishes are all related.
A colorful mandarinfish on a reef
Genome Spotlight: Mandarinfish (Synchiropus splendidus)
Christie Wilcox | Oct 28, 2021
The high-quality genome sequence sheds light on the colorful nature of these popular aquarium fish.
view from below of hundreds of silver sardines swimming in the same direction
Famous South African Sardine Run Doesn’t Benefit Sardines: Study
Alex Billow | Oct 19, 2021
An analysis suggests that a commercially important mass migration of fish may have no real adaptive value.
dead fish piled in boxes along a pier, with a boat and snowy mountains in the background
Fish Poop a Big Player in Ocean Carbon Sequestration
Katarina Zimmer | Oct 8, 2021
A modeling study estimates that by drastically reducing fish biomass over the past century, industrial fishing may be affecting ocean chemistry, nutrient fluxes, and carbon cycling as much as climate change.
ABOVE: A pair of Labroides dimidiatus cleaner fish cleaning a puffer fish
Cleaner Fish Alter Behavior if Partners Can See Them “Cheating”
Chloe Tenn | Oct 7, 2021
A study of feeding behavior suggests the fish feed differently in front of their partners—a behavioral feature also found in primates.
Photographs of animals
Numerosity Around the Animal Kingdom
Catherine Offord | Oct 1, 2021
Research in recent decades has explored how animals other than humans perceive different numbers of objects
Five morphs of Poecilia parae—from top: melanzona yellow, melanzona blue, melanzona red, parae, immaculata—and a female (bottom) of the same species
Fish Species’ Y Chromosomes Diverged Even Without Recombination
Catherine Offord | Sep 1, 2021
Researchers discover surprisingly high levels of genetic diversity among the colorful male morphs of a freshwater fish.
a purple betta with white fins in a tank
My Daughter’s First Pet—the Next Big Model Organism?
Christie Wilcox | Jul 15, 2021
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.
a brown trout in the hands of a person wearing a green jacket
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.
a tuna salad sub with lettuce and tomato on a wooden board with fresh veggies in the background
Tuna Story Exposes Challenges of Seafood Authentication
Christie Wilcox | Jul 1, 2021
A New York Times investigation’s failure to amplify tuna DNA from Subway’s tuna salad sandwiches likely says more about the complexities of identifying processed fish than about the ingredients.
A blue coelacanth with white speckles in the ocean
African Coelacanths May Live to Be 100: Study
Catherine Offord | Jun 18, 2021
This evolutionarily ancient fish species has a lifespan that’s around five times longer than previously thought, and a gestation time of more than five years.
nutshell, pollinators, pesticides, agriculture, crop pest, ecology & environment, insect, toxin, chemical, mammal, bird, fish, plants
US Pesticide Use Is Down, but Damage to Pollinators Is Rising
Amanda Heidt | Apr 5, 2021
The use of pesticides has decreased in the US by more than 40 percent since 1992, but the emergence of more-potent chemicals means that they are far more damaging to many species.
Book Club Discussion of Lulu Miller's Why Fish Don't Exist
The Scientist Social Club | Mar 26, 2021
The Scientist Social Club talked to the author and her dad, Chris Miller.