While you might think of fish as harmless ... of old-timey aquarium chain gang. But what's more bizarre than their striped patterns is what's inside their mouths: a top row of teeth that look ...

A fish with human-like teeth has been caught in the United States. A photo of the fish was shared on Facebook this week by Jennette's Pier, a fishing destination in Nag's Head, North Carolina.

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 ...