Delivering a minor electric shock into a stream to reveal any fish lurking nearby may be the gold standard for detecting fish populations, but it's not much fun for the trout. Scientists have found ...

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, ...

Associate Professor and fish expert Peter Rask Møller from the National History Museum of Denmark, who also participated in the study, is optimistic. "The new DNA method has very interesting ...

How the dental mold works: Researchers take impressions of fish teeth, using a fish called Polypterus as an example; (A) 3D model of the mold showing mandibular/lower side, maxillary/upper side, and ...