Drawing of fish along with internal organs
Researchers Visualize Heart From 380-Million-Year-Old Fish
A team of researchers in Australia have imaged fossilized soft organs of early jawed vertebrates for the first time, finding that our ancient fish ancestors’ hearts, livers, and stomachs are strikingly similar to ours.
Researchers Visualize Heart From 380-Million-Year-Old Fish
Researchers Visualize Heart From 380-Million-Year-Old Fish

A team of researchers in Australia have imaged fossilized soft organs of early jawed vertebrates for the first time, finding that our ancient fish ancestors’ hearts, livers, and stomachs are strikingly similar to ours.

A team of researchers in Australia have imaged fossilized soft organs of early jawed vertebrates for the first time, finding that our ancient fish ancestors’ hearts, livers, and stomachs are strikingly similar to ours.

fishes
A school of juvenile spiny chromis (Acanthochromis polycanthus)
Human-Made Noise Disrupts Fish Parenting
Christie Wilcox | May 23, 2022
The roar of nearby boat engines alters how fish care for and protect their young, resulting in fewer successful nests and smaller offspring, a study finds.
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.
silver carp swimming in the fox river near lake michigan
Invasive Carp Could Spread Across Lake Michigan on Detritus Diet
Nicoletta Lanese | Aug 14, 2019
The fish’s undiscerning palate might make more of the lake habitable to the species than once thought, according to a new study.
Behavior Brief
Amanda B. Keener | Jul 6, 2015
A round-up of recent discoveries in behavior research
Fantastical Fish, circa 1719
Abby Olena | Jan 1, 2014
A collection of colorful drawings compiled by publisher Louis Renard sheds light on eighteenth-century science.
Renard's Menagerie
Abby Olena | Dec 31, 2013
Some of the fantastical marine life depicted in a rare, 18th-century book
Speed-Sensitive Denticles
Kerry Grens | Apr 1, 2013
Tooth-like structures on the skin of a South American fish might serve as high-velocity water-flow detectors.