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 ...

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, ...

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, ...

Researchers have found a fish with a strange feature that makes it look almost like it has a human smile. Hidden beneath the ...

It's not what you do, it's how readily you do it. Rapid evolutionary change might have more to do with how easily a key innovation can be gained or lost rather than with the innovation itself, ...

These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish to the formidable, pointed teeth of sharks. But fish evolved from toothless ...

Before you think about canceling your hard-earned summer vacation, experts say you can take a deep breath and keep your ...

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, ...

View post: Is Friday, July 3, a Federal Holiday? Info on Banks and Mail for July 3 and July 4 A new study, published on May 21 in the journal Nature, has revealed surprising information about the ...

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 ...