Millions of people around the world rely upon them for food - but fish are also pretty cool creatures. Literally.
The cold-blooded aquatic vertebrates often play a very important role in ecosystems - whether in rivers, lakes or oceans. Here's an automated compilation of content relating to fish.
It's long been known that lizards drop their tails to avoid being eaten by predators, but little was known about the Madagascar fish-scale gecko and its ability to shed its skin when under attack - until now. With me to talk about this strip-teasing gecko and the researchers amazing discovery is Ph.D student Mark Scherz.