Anglers who hook a long, snake-like fish with a mottled brown pattern and a mouth full of teeth are being told by state and ...

The Amazon Basin contains the largest number of scientifically described freshwater fish species in the world: 2,257 or 15% of the total number of known freshwater species. According to a new study, ...

In an Australian first, researchers have described a new species of 15-million-year-old fossilized freshwater fish, Ferruaspis brocksi, that shows preserved stomach contents as well as the pattern of ...

Two species of damselfish may look identical—not to mention drab—to the human eye. But that's because, in comparison to the fish, all of us are essentially colorblind. A new study published online on ...

Scientists found a “large”-eyed creature in a pond of the Democratic Republic of the Congo and discovered a new species, a study said. Photo from B. Katemo Manda via Nagy (2025) Near a river in the ...

Fish exhibit a remarkable diversity of pigment patterns, arising from the spatial arrangement and interactions of specialised pigment cells known as chromatophores. Three principal chromatophore ...