A new fish species has emerged, but it does not hail from the realm of Mordor as its name suggests. The relationship between pacus and piranhas has been closely studied by researchers and while the ...

Drum fish are given their unique name not because they have drums in their bodies but because they let out croaker sounds produced by their swim bladders. There are around 275 species of drum fish, ...

Can we examine the teeth of living fish and other vertebrates in detail, repeatedly over time, without harming them? Previously, small animals often had to be euthanized to obtain precise information, ...

The cichlid fish of Africa's Great Lakes have formed new species more rapidly than any other group of vertebrates. A new study shows that the ease with which these fish can develop a biological ...

The Viperfish’s Teeth Are Larger Than Its Mouth These formidable teeth cause the viperfish’s lower jaw to protrude forward. The teeth sit outside of the mouth, interlocking, with two large lower fangs ...

Off the coast of Kerala, India, a trawling net caught a new species of bottom-dweller. Getty Images/iStock Photo Off the coast of India, a trawling net pulled behind a boat captured a collection of ...

Scientists found a “shiny,” “silvery” creature with “hooked” teeth in a river of China and discovered a new species, a study said. Photo from Lei, Gong and Li (2025) In a river of southeastern China, ...